P & C -4 (CSAT-2011)

There are four routes to travel from city A to city B and six routes from city B to city C. How many routes are possible to travel from city A to city C?

(A) 24

(B) 12

(C) 10

(D) 8
Solution follows here:

Solution:

This is a straight forward Q.

Fundamental theorem says “If one thing can be done in m ways and another in n ways, then both can be done one after other in m*n ways”.

Total possible routes possible to travel from A to C = 4 * 6 = 24

Answer (A)