Question

The number of ways of selecting 3 boys AND 5 girls from a group of 7 boys and 8 girls.

Answer 1

@.Sam.
@ash2326

Answer 2

\[(C(7,3))*(C(8,5))\]

Answer 3

Ok, so it's a problem of combination:)
Do you know what's \[^aC_b\]??

Answer 4

I don't understand your question.

Answer 5

Have you studied combination?

Answer 6

Oh, yes.

Answer 7

So if I want to choose 2 items from 3 items, tell me the no. of ways?

Answer 8

3C2= 3. Therefore, 3 ways.

Answer 9

Ok so choose 3 boys from 7 boys?

Answer 10

7C3= 35.

Answer 11

Now choose 5 girls from 8 girls?

Answer 12

8C5=56. (girls)

Answer 13

35 x 56= 1,960.

Answer 14

Now multiply these two, you'll get your answer

Answer 15

oops:P
Yeah:D you're right:D

Answer 16

Interesting. I thought there was more to it than that. Thanks!