Permutation And Combination Q15

15.There are 3 questions in a question paper. If the questions have 4,3 and 2 solutions respectively, find the total number of solutions.

A.24                                                   B.34

C.12                                                   D.22

Solution:

Here question 1 has 4 solutions, question 2 has 3 solutions and question 3 has 2 solutions.

=> By the multiplication (counting) rule,
Total number of solutions=4*3*2= 24