Thread: choice test prob

1. IF A MULTIPLE CHOICE TEST CONSIST OF 5 QUESTION EACH,WILL FOUR POSSIBLE ANSWER ON WHICH ONLY ONE IS CORECT.

A. HOW MANY DIFF WAYS CAN A STUDENT CHECK OF ONE ANSWER TO ITS QUESTION.

B. HOW MANY WAYS CAN A STUDENT CHECK OF ONE ANSWER TO ITS QUESTION AND SET ALL THE QUESTIONS WRONG.

a) Number of ways to answer
4 x 4 x 4 x 4 x 4 = 4^5

b) Number of ways to get all answes wrong
3 x 3 x 3 x 3 x 3 = 3^5