Question

Use Pascal’s triangle to find the number of ways to choose 4 shirts from 6 shirts.

Answer 1

You need to find the 6th row, 4th element in Pascal's triangle. Are you able to draw Pascal's triangle?

Answer 2

Yeah i can draw it and i have a picture with up to row 13

Answer 3

Ok, so the find the 6th row and 4th element. Be careful though, the row with 1 on it's own is considered the 0th row, and the first 1 in every row is considered the 0th element. Let me know what you get and I'll tell you if it's correct :)

Answer 4

Is it 20?

Answer 5

Not quite.

Answer 6

oh 15 then. i counted the 1

Answer 7

Brilliant :)

Answer 8

Thanks :) appreciate it

Answer 9

No worries, good luck with your studies.

Answer 10

Look at me rhyming.

Answer 11

it is... 6c4 i hope....6C4

thats is 1 6 15 20 15 6 1 and its 15