U12_L2_T4_we1 Permutations and Combinations 4

### Comments

• #### azeenator

January 3, 2012 at 1:57 am

Khan you just﻿ saved my life! 🙂

• #### PaidVideoReviews

January 3, 2012 at 2:40 am

@Dragonnoodle1﻿ Yes.

• #### Dragonnoodle1

January 3, 2012 at 3:17 am

So basicly if the order was important you would﻿ use permutations?

• #### Dragonnoodle1

January 3, 2012 at 3:54 am

I have a test of this in an hour and I didnt really study o.O I﻿ am going to die!

• #### l4l01234

January 3, 2012 at 4:02 am

Excellent video.﻿

• #### moka22051

January 3, 2012 at 4:26 am

@Ekman900509﻿ YYYESS!!

• #### Ekman900509

January 3, 2012 at 4:41 am

These 4 vids learned me everything about permutation and combinations that I tried to learn with my calculus book for hours.﻿

• #### PhxPride1

January 3, 2012 at 4:51 am

Watched the four video set﻿ and loved it, thanks Khan.

• #### treefangers

January 3, 2012 at 5:00 am

@24ballin23 They occur in 24 different ways; however, there are 11,703,240 permutations – not 487,635.

24/11703240﻿ = 1/487635

Tacos are delicious.

• #### mitomke

January 3, 2012 at 5:48 am

So each lottery is an independent event with a one in 487,635 chance in winning. is this correct? So if the same 4﻿ numbers are played week after week , the chance of winning with those same numbers is not increased because each event is independent.

• #### crystalidx

January 3, 2012 at 6:33 am

@24ballin23 He﻿ did do that, because order doesn’t matter, he divided it by 4! and he got 487635 for the combinations. And for the possibity he got 1/487635. its not wrong.

• #### 24ballin23

January 3, 2012 at 6:37 am

His﻿ answer is wrong.

Its [24/ 487635] because the order doesn’t matter thus those winning numbers occur in 4!=24 ways.

• #### shdubbleorti

January 3, 2012 at 6:49 am

how would you solve one an outrageously high number such﻿ as. 300P289?

• #### Waranle

January 3, 2012 at 7:33 am

Thank you Sal,﻿ plz more videos of discrete maths 🙂

• #### MomoBG22

January 3, 2012 at 7:36 am

the old calc was way cooler﻿ :))

Comments are closed.