Tabancura3062viz
Answered

In a class there are 25 males and 9 females. The teacherwants to select 1 boy and 1 girl to represent a competition.In how many ways can the teacher make this selection ​

Sagot :

Liezelaudreydeguzmanviz

Answer:

by giving a test and whoever wins the man and woman will participate. in competition

Ohmyjoshviz

Answer:

C(n,r) = C(25,1)

= 25!/(1!(25−1)!)

= 25!/(1!×24!)

= 25

C(n,r) = C(9,1)  

= 9!/(1!(9−1)!)

= 9!/(1!×8!)

= 9

25 x 9 = 225 ways

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