Lecture Room - Season 421 : Episode 1

Episodes : 14

Season 1

2001-07-09

Episodes : 19

Season 2

2001-07-11

Episodes : 24

Season 3

2001-07-12

Episodes : 13

Season 4

2001-07-19

Episodes : 21

Season 5

2003-05-12

Episodes : 13

Season 6

2001-07-20

Episodes : 13

Season 7

2001-09-17

Episodes : 13

Season 8

2001-07-26

Episodes : 30

Season 9

2004-03-08

Episodes : 10

Season 10

2001-07-30

Episodes : 17

Season 11

2001-08-01

Episodes : 22

Season 12

2001-10-12

Episodes : 41

Season 13

N/A

Episodes : 23

Season 14

2001-08-21

Episodes : 19

Season 15

2002-05-28

Episodes : 20

Season 16

2002-07-08

Episodes : 20

Season 17

2002-11-27

Episodes : 15

Season 18

2001-10-02

Episodes : 15

Season 19

2001-10-15

Episodes : 22

Season 20

2001-11-02

Episodes : 13

Season 21

2001-09-24

Episodes : 22

Season 22

2001-12-03

Episodes : 19

Season 23

2001-12-06

Episodes : 12

Season 24

2003-11-12

Episodes : 10

Season 25

2003-09-11

Episodes : 18

Season 26

2003-05-14

Episodes : 9

Season 27

2003-03-27

Episodes : 9

Season 28

2004-04-02

Episodes : 41

Season 29

N/A

Episodes : 2

Season 30

2004-05-27

Episodes : 7

Season 31

2004-06-08

Episodes : 4

Season 32

N/A

Episodes : 3

Season 33

N/A

Episodes : 4

Season 34

2004-09-07

Episodes : 2

Season 35

2004-09-16

Episodes : 5

Season 36

2004-09-21

Episodes : 5

Season 37

2004-09-29

Episodes : 3

Season 38

2004-10-14

Episodes : 3

Season 39

2004-10-20

Episodes : 4

Season 40

2004-10-26

Episodes : 4

Season 41

2004-11-02

Episodes : 4

Season 42

2004-11-09

Episodes : 3

Season 43

2004-11-23

Episodes : 12

Season 44

2004-11-30

Episodes : 6

Season 45

2004-12-21

Episodes : 2

Season 46

N/A

Episodes : 15

Season 47

N/A

Episodes : 24

Season 48

2005-01-11

Episodes : 11

Season 49

2005-01-20

Episodes : 10

Season 50

2004-11-16

Episodes : 18

Season 51

N/A

Episodes : 4

Season 52

2005-03-08

Episodes : 15

Season 53

2005-03-29

Episodes : 62

Season 54

N/A

Episodes : 17

Season 55

N/A

Episodes : 32

Season 56

2005-04-19

Episodes : 23

Season 57

2004-06-23

Episodes : 4

Season 58

2005-05-24

Episodes : 2

Season 59

2005-05-31

Episodes : 4

Season 60

2005-09-13

Episodes : 4

Season 61

2005-11-01

Episodes : 9

Season 62

2005-11-08

Episodes : 3

Season 63

2005-11-16

Episodes : 4

Season 64

2005-11-22

Episodes : 2

Season 65

2005-12-20

Episodes : 5

Season 66

2005-12-26

Episodes : 17

Season 67

2006-01-02

Episodes : 5

Season 68

2006-01-09

Episodes : 67

Season 69

2005-07-13

Episodes : 3

Season 70

2006-01-25

Episodes : 2

Season 71

2006-01-28

Episodes : 4

Season 72

2006-03-27

Episodes : 3

Season 73

N/A

Episodes : 6

Season 74

2006-06-05

Episodes : 4

Season 75

2006-06-12

Episodes : 5

Season 76

2006-06-29

Episodes : 56

Season 77

2006-02-12

Episodes : 47

Season 78

N/A

Episodes : 29

Season 79

2006-09-17

Episodes : 8

Season 80

2006-10-01

Episodes : 6

Season 81

2006-10-30

Episodes : 10

Season 82

2006-11-06

Episodes : 8

Season 83

2006-12-11

Episodes : 87

Season 84

2007-01-06

Episodes : 10

Season 85

2007-02-18

Episodes : 6

Season 86

2007-03-08

Episodes : 37

Season 87

2007-03-19

Episodes : 4

Season 88

2007-05-01

Episodes : 2

Season 89

2007-05-05

Episodes : 12

Season 90

2007-05-07

Episodes : 17

Season 91

2007-05-19

Episodes : 24

Season 92

2007-06-27

Episodes : 5

Season 93

2007-07-01

Episodes : 7

Season 94

2007-08-28

Episodes : 3

Season 95

2007-10-01

Episodes : 4

Season 96

2007-10-26

Episodes : 10

Season 97

2007-11-07

Episodes : 33

Season 98

2007-11-19

Episodes : 53

Season 99

2008-01-01

Episodes : 3

Season 100

2008-01-14

Episodes : 10

Season 101

2008-01-21

Episodes : 10

Season 102

2008-02-04

Episodes : 24

Season 103

2008-03-02

Episodes : 5

Season 104

2008-03-17

Episodes : 10

Season 105

2008-03-31

Episodes : 9

Season 106

2008-04-14

Episodes : 5

Season 107

2008-05-01

Episodes : 16

Season 108

N/A

Episodes : 5

Season 109

2008-06-02

Episodes : 15

Season 110

2008-06-16

Episodes : 9

Season 111

2007-02-01

Episodes : 5

Season 112

2008-06-30

Episodes : 10

Season 113

2008-07-18

Episodes : 15

Season 114

2008-08-04

Episodes : 18

Season 115

2008-09-04

Episodes : 10

Season 116

2008-10-01

Episodes : 37

Season 117

2008-10-11

Episodes : 15

Season 118

2008-10-13

Episodes : 3

Season 119

2008-11-05

Episodes : 7

Season 120

2008-12-01

Episodes : 3

Season 121

2008-12-10

Episodes : 2

Season 122

2008-12-24

Episodes : 64

Season 123

2011-09-01

Episodes : 3

Season 124

2008-06-07

Episodes : 44

Season 125

2009-01-27

Episodes : 10

Season 126

2009-03-09

Episodes : 5

Season 127

2009-05-04

Episodes : 10

Season 128

2009-05-11

Episodes : 9

Season 129

2009-06-02

Episodes : 10

Season 130

2009-06-11

Episodes : 8

Season 131

2009-08-12

Episodes : 6

Season 132

2009-10-01

Episodes : 15

Season 133

2009-10-07

Episodes : 25

Season 134

2009-10-12

Episodes : 3

Season 135

2009-11-06

Episodes : 10

Season 136

2009-11-24

Episodes : 3

Season 137

2009-12-04

Episodes : 41

Season 138

2009-12-07

Episodes : 7

Season 139

2010-01-17

Episodes : 8

Season 140

2010-02-06

Episodes : 19

Season 141

2010-02-14

Episodes : 7

Season 142

2010-03-04

Episodes : 17

Season 143

2010-03-11

Episodes : 5

Season 144

2010-03-28

Episodes : 31

Season 145

2010-05-10

Episodes : 2

Season 146

2010-06-10

Episodes : 7

Season 147

N/A

Episodes : 9

Season 148

2010-06-19

Episodes : 22

Season 149

2010-07-08

Episodes : 14

Season 150

2010-07-30

Episodes : 8

Season 151

2010-08-13

Episodes : 8

Season 152

2010-08-21

Episodes : 15

Season 153

2010-08-30

Episodes : 13

Season 154

2010-10-10

Episodes : 21

Season 155

2010-10-23

Episodes : 21

Season 156

2010-11-13

Episodes : 6

Season 157

2010-12-04

Episodes : 14

Season 158

2010-12-10

Episodes : 11

Season 159

2010-12-24

Episodes : 10

Season 160

2011-01-04

Episodes : 8

Season 161

2011-01-14

Episodes : 21

Season 162

2011-01-22

Episodes : 5

Season 163

2011-01-27

Episodes : 7

Season 164

2011-02-01

Episodes : 45

Season 165

2011-02-24

Episodes : 10

Season 166

2011-04-10

Episodes : 14

Season 167

2011-04-20

Episodes : 10

Season 168

2011-05-04

Episodes : 29

Season 169

2011-05-14

Episodes : 18

Season 170

2011-06-14

Episodes : 6

Season 171

2011-07-02

Episodes : 17

Season 172

2011-07-08

Episodes : 7

Season 173

2011-07-25

Episodes : 10

Season 174

2011-08-01

Episodes : 29

Season 175

2011-08-11

Episodes : 7

Season 176

2011-10-01

Episodes : 21

Season 177

2011-10-08

Episodes : 17

Season 178

2011-10-29

Episodes : 13

Season 179

2012-01-01

Episodes : 13

Season 180

2012-01-14

Episodes : 9

Season 181

2012-01-27

Episodes : 32

Season 182

2012-02-05

Episodes : 20

Season 183

2012-02-24

Episodes : 15

Season 184

2012-03-15

Episodes : 29

Season 185

2012-03-30

Episodes : 8

Season 186

2012-04-28

Episodes : 8

Season 187

2012-05-06

Episodes : 15

Season 188

2012-05-14

Episodes : 14

Season 189

2012-05-29

Episodes : 29

Season 190

2012-06-12

Episodes : 20

Season 191

2012-07-11

Episodes : 24

Season 192

2012-07-31

Episodes : 40

Season 193

2012-08-24

Episodes : 6

Season 194

2010-01-24

Episodes : 7

Season 195

2010-01-30

Episodes : 14

Season 196

2010-09-14

Episodes : 3

Season 197

2010-09-28

Episodes : 22

Season 198

2011-09-09

Episodes : 23

Season 199

N/A

Episodes : 11

Season 200

2012-11-16

Episodes : 6

Season 201

2012-11-27

Episodes : 14

Season 202

2012-12-03

Episodes : 2

Season 203

2012-12-17

Episodes : 15

Season 204

2012-12-19

Episodes : 24

Season 205

2013-01-03

Episodes : 24

Season 206

2013-01-27

Episodes : 15

Season 207

2013-02-20

Episodes : 21

Season 208

2013-03-07

Episodes : 36

Season 209

2013-03-28

Episodes : 25

Season 210

N/A

Episodes : 11

Season 211

2013-05-29

Episodes : 7

Season 212

2013-06-09

Episodes : 16

Season 213

2013-06-16

Episodes : 18

Season 214

2013-07-02

Episodes : 13

Season 215

2013-07-20

Episodes : 23

Season 216

2013-08-02

Episodes : 7

Season 217

2013-08-25

Episodes : 32

Season 218

2013-09-01

Episodes : 3

Season 219

2013-10-03

Episodes : 10

Season 220

2013-10-06

Episodes : 20

Season 221

2013-10-16

Episodes : 20

Season 222

2013-11-05

Episodes : 2

Season 223

2013-11-25

Episodes : 15

Season 224

2013-11-27

Episodes : 8

Season 225

2013-12-12

Episodes : 6

Season 226

2013-12-20

Episodes : 8

Season 227

2013-12-26

Episodes : 6

Season 228

2014-01-03

Episodes : 10

Season 229

2014-01-09

Episodes : 5

Season 230

2014-01-19

Episodes : 24

Season 231

2014-01-24

Episodes : 14

Season 232

2014-02-17

Episodes : 11

Season 233

2014-04-06

Episodes : 15

Season 234

2014-03-17

Episodes : 5

Season 235

2014-04-01

Episodes : 24

Season 236

2014-04-17

Episodes : 5

Season 237

2014-05-11

Episodes : 16

Season 238

2014-05-16

Episodes : 12

Season 239

2014-06-01

Episodes : 7

Season 240

2014-06-13

Episodes : 14

Season 241

2014-06-20

Episodes : 12

Season 242

2014-07-04

Episodes : 12

Season 243

2014-07-16

Episodes : 12

Season 244

2014-07-28

Episodes : 21

Season 245

2014-08-09

Episodes : 18

Season 246

2014-08-30

Episodes : 8

Season 247

2014-09-17

Episodes : 6

Season 248

2014-09-25

Episodes : 3

Season 249

2014-10-01

Episodes : 10

Season 250

2014-10-04

Episodes : 8

Season 251

2014-10-14

Episodes : 12

Season 252

2014-10-22

Episodes : 19

Season 253

2014-11-03

Episodes : 6

Season 254

2014-11-22

Episodes : 14

Season 255

2014-11-28

Episodes : 12

Season 256

2014-12-18

Episodes : 15

Season 257

2014-12-30

Episodes : 3

Season 258

2015-01-14

Episodes : 7

Season 259

2015-01-18

Episodes : 18

Season 260

2015-01-25

Episodes : 20

Season 261

2015-02-12

Episodes : 11

Season 262

2015-03-04

Episodes : 10

Season 263

2015-03-15

Episodes : 14

Season 264

2015-03-25

Episodes : 12

Season 265

2015-04-08

Episodes : 10

Season 266

2015-04-20

Episodes : 12

Season 267

2015-04-30

Episodes : 14

Season 268

2015-05-12

Episodes : 8

Season 269

2015-05-26

Episodes : 3

Season 270

2015-06-03

Episodes : 4

Season 271

2015-06-06

Episodes : 3

Season 272

2015-06-10

Episodes : 23

Season 273

2015-06-13

Episodes : 94

Season 274

2015-07-01

Episodes : 24

Season 275

2015-07-11

Episodes : 14

Season 276

2015-08-04

Episodes : 10

Season 277

2015-08-18

Episodes : 16

Season 278

2015-09-06

Episodes : 12

Season 279

2015-10-10

Episodes : 4

Season 280

2015-10-22

Episodes : 8

Season 281

2015-11-09

Episodes : 6

Season 282

2015-11-17

Episodes : 9

Season 283

2015-11-23

Episodes : 16

Season 284

2015-12-03

Episodes : 10

Season 285

2015-12-19

Episodes : 17

Season 286

2015-12-29

Episodes : 8

Season 287

2016-02-08

Episodes : 17

Season 288

2016-02-16

Episodes : 10

Season 289

2016-03-04

Episodes : 20

Season 290

2016-03-14

Episodes : 5

Season 291

2016-04-03

Episodes : 17

Season 292

2016-04-08

Episodes : 15

Season 293

2016-04-25

Episodes : 6

Season 294

2016-04-29

Episodes : 20

Season 295

2016-05-16

Episodes : 2

Season 296

2016-06-05

Episodes : 4

Season 297

2016-06-07

Episodes : 10

Season 298

2016-06-11

Episodes : 6

Season 299

2016-06-21

Episodes : 20

Season 300

2016-07-05

Episodes : 10

Season 301

2016-07-25

Episodes : 14

Season 302

2016-08-04

Episodes : 14

Season 303

2016-08-18

Episodes : 20

Season 304

2016-09-01

Episodes : 4

Season 305

2016-09-15

Episodes : 6

Season 306

2016-09-25

Episodes : 15

Season 307

2016-10-01

Episodes : 20

Season 308

2016-10-26

Episodes : 10

Season 309

2016-11-15

Episodes : 22

Season 310

2016-11-25

Episodes : 5

Season 311

2016-12-17

Episodes : 19

Season 312

2016-12-22

Episodes : 9

Season 313

2017-01-10

Episodes : 16

Season 314

2017-01-19

Episodes : 16

Season 315

2017-02-04

Episodes : 15

Season 316

2017-02-20

Episodes : 19

Season 317

2017-03-07

Episodes : 10

Season 318

2017-03-26

Episodes : 4

Season 319

2017-04-01

Episodes : 26

Season 320

2017-04-09

Episodes : 17

Season 321

2017-05-05

Episodes : 10

Season 322

2017-05-22

Episodes : 19

Season 323

2017-06-01

Episodes : 9

Season 324

2017-06-20

Episodes : 20

Season 325

2017-07-03

Episodes : 12

Season 326

2017-07-23

Episodes : 8

Season 327

2017-08-19

Episodes : 21

Season 328

2017-08-27

Episodes : 4

Season 329

2017-09-10

Episodes : 17

Season 330

2017-09-21

Episodes : 6

Season 331

2017-10-08

Episodes : 13

Season 332

2017-10-29

Episodes : 10

Season 333

2017-11-15

Episodes : 11

Season 334

2017-11-29

Episodes : 5

Season 335

2017-12-11

Episodes : 20

Season 336

2017-12-21

Episodes : 28

Season 337

2018-01-12

Episodes : 18

Season 338

2018-02-09

Episodes : 15

Season 339

2018-02-27

Episodes : 15

Season 340

2018-03-14

Episodes : 27

Season 341

2018-03-29

Episodes : 4

Season 342

2018-04-05

Episodes : 15

Season 343

2018-04-29

Episodes : 6

Season 344

2018-05-14

Episodes : 2

Season 345

2018-05-17

Episodes : 20

Season 346

2018-05-22

Episodes : 9

Season 347

2018-06-03

Episodes : 20

Season 348

2018-09-21

Episodes : 24

Season 349

2018-10-23

Episodes : 12

Season 350

2018-11-02

Episodes : 16

Season 351

2018-11-14

Episodes : 15

Season 352

2018-11-30

Episodes : 15

Season 353

2019-01-01

Episodes : 22

Season 354

2019-01-21

Episodes : 12

Season 355

2019-02-20

Episodes : 10

Season 356

2019-03-04

Episodes : 18

Season 357

2019-03-14

Episodes : 16

Season 358

2019-04-01

Episodes : 15

Season 359

2019-04-17

Episodes : 18

Season 360

2019-05-02

Episodes : 23

Season 361

2019-05-20

Episodes : 18

Season 362

2019-06-12

Episodes : 16

Season 363

2019-07-10

Episodes : 12

Season 364

2019-07-26

Episodes : 7

Season 365

2019-08-07

Episodes : 7

Season 366

2019-08-14

Episodes : 18

Season 367

2019-08-21

Episodes : 8

Season 368

2019-09-08

Episodes : 29

Season 369

2019-09-16

Episodes : 8

Season 370

2019-10-01

Episodes : 14

Season 371

2019-11-06

Episodes : 15

Season 372

2019-11-20

Episodes : 15

Season 373

2019-12-05

Episodes : 10

Season 374

2019-12-20

Episodes : 8

Season 375

2019-02-04

Episodes : 6

Season 376

2019-10-14

Episodes : 16

Season 377

2019-12-30

Episodes : 29

Season 378

2020-01-15

Episodes : 10

Season 379

2020-01-24

Episodes : 24

Season 380

2020-02-03

Episodes : 8

Season 381

2020-02-29

Episodes : 12

Season 382

2020-03-08

Episodes : 20

Season 383

2020-03-20

Episodes : 17

Season 384

2020-04-09

Episodes : 34

Season 385

2020-04-26

Episodes : 20

Season 386

2020-05-21

Episodes : 20

Season 387

2020-07-03

Episodes : 30

Season 388

2020-07-23

Episodes : 7

Season 389

2020-08-28

Episodes : 20

Season 390

2020-09-04

Episodes : 6

Season 391

2020-09-24

Episodes : 13

Season 392

2020-09-30

Episodes : 6

Season 393

2020-10-25

Episodes : 3

Season 394

2020-10-31

Episodes : 4

Season 395

2020-11-03

Episodes : 20

Season 396

2020-11-13

Episodes : 27

Season 397

2020-12-03

Episodes : 5

Season 398

2020-12-31

Episodes : 18

Season 399

2021-01-05

Episodes : 8

Season 400

2021-01-23

Episodes : 16

Season 401

2021-01-31

Episodes : 12

Season 402

2021-02-11

Episodes : 23

Season 403

2021-03-15

Episodes : 3

Season 404

2021-04-07

Episodes : 12

Season 405

2021-04-10

Episodes : 17

Season 406

2021-04-22

Episodes : 20

Season 407

2021-05-09

Episodes : 22

Season 408

2021-05-29

Episodes : 5

Season 409

2021-06-20

Episodes : 5

Season 410

2021-07-11

Episodes : 12

Season 411

2021-07-16

Episodes : 8

Season 412

2021-07-28

Episodes : 32

Season 413

2021-08-05

Episodes : 5

Season 414

2021-09-06

Episodes : 14

Season 415

2021-09-11

Episodes : 7

Season 416

2021-10-01

Episodes : 15

Season 417

2021-09-25

Episodes : 16

Season 418

2021-10-17

Episodes : 10

Season 419

2021-11-02

Episodes : 18

Season 420

2021-11-12

Episodes : 12

Season 421

2021-11-30

Episodes : 19

Season 422

2021-12-12

Episodes : 17

Season 423

2021-12-31

Episodes : 14

Season 424

2022-01-17

Episodes : 3

Season 425

2022-01-31

Episodes : 12

Season 426

2022-02-03

Episodes : 15

Season 427

2022-02-15

Episodes : 30

Season 428

2022-03-02

Episodes : 7

Season 429

2022-04-01

Episodes : 8

Season 430

2022-04-08

Episodes : 14

Season 431

2022-04-16

Episodes : 18

Season 432

2022-04-18

Episodes : 12

Season 433

2022-05-12

Episodes : 7

Season 434

2022-06-20

Episodes : 20

Season 435

2022-07-14

Episodes : 10

Season 436

2022-07-16

Episodes : 15

Season 437

2022-08-13

Episodes : 6

Season 438

2022-08-20

Episodes : 22

Season 439

2022-09-01

Episodes : 30

Season 440

2022-09-25

Episodes : 25

Season 441

2022-10-15

Episodes : 20

Season 442

2022-11-14

Episodes : 10

Season 443

2022-12-09

Episodes : 8

Season 444

2022-12-19

Episodes : 20

Season 445

2022-12-27

Episodes : 23

Season 446

2023-01-16

Episodes : 16

Season 447

2023-02-08

Episodes : 16

Season 448

2023-02-24

Episodes : 13

Season 449

2023-03-12

Episodes : 14

Season 450

2023-03-25

Episodes : 8

Season 451

2023-04-08

Episodes : 8

Season 452

2023-04-16

Episodes : 18

Season 453

2023-04-24

Episodes : 15

Season 454

2023-05-12

Episodes : 15

Season 455

2023-05-27

Episodes : 10

Season 456

2023-06-11

Episodes : 12

Season 457

2023-06-21

Episodes : 12

Season 458

2023-07-03

Episodes : 18

Season 459

2023-07-15

Episodes : 4

Season 460

2023-08-02

Episodes : 7

Season 461

2023-08-06

Episodes : 20

Season 462

2023-08-13

Episodes : 14

Season 463

2023-09-02

Episodes : 14

Season 464

2023-09-16

Episodes : 8

Season 465

2023-09-30

Episodes : 6

Season 466

2023-10-08

Episodes : 12

Season 467

2023-10-14

Episodes : 10

Season 468

2023-10-26

Episodes : 10

Season 469

2023-11-05

Episodes : 18

Season 470

2023-11-15

Episodes : 12

Season 471

2023-12-14