Question

There are 9 boys & 15 girls in a class. Three children are chosen at random . what is the probability that

(a) one is a boy and two are girls???

Answer 1

i am not sure but i think:
2/135

Answer 2

its 945/2024

Answer 3

yes@uditkulka is right

Answer 4

yes i know i am right but what is the sollution i mean explanation can u give me please????

Answer 5

ya

Answer 6

see 15+9=24 total =24C3=2024

Answer 7

and 9C1*15C2=945

Answer 8

understood

Answer 9

9/15 = 3/5.....thefore probability is 3/8 of being a boy and 5/8 of being a girl

Answer 10

whats c1 and C2

Answer 11

?

Answer 12

9*1/1*15*14/2=945

Answer 13

combinations ncr formula

Answer 14

thanks

Answer 15

yw