Question

PLEASE ANYONE !!!!????

A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly four twos.

A. 0.202

B. 0.075

C. 0.101

D. 0.083

Answer 1

probability of rolling a 2 is 1/6

getting 4 out of 20 using binomial theorem:
20 choose 4 = 4845

--> 4845*(1/6)^4 *(5/6)^16

Answer 2

thanks