Wayne is at basketball practice preparing to shoot three-pointers. The probability of Wayne making a three-pointer is 21%. What is the probability he make his first three-pointer on the fourth shot?

Question

A. 8%

B. 10%

C. 15%

D. 17%

Answer 1

Making the first 3-pointer in the 4th shot means not making it in the first three and then making it on the fourth.

(1-0.21)*(1-0.21)*(1-0.21)*0.21=(0.79)*(0.79)*(0.79)*(0.21)=0.1=10%