Question
Mathematics Question on Permutations and Combinations
If there are 3 different roads from Delhi to Mumbai and 4 different roads from Mumbai to Chennai, then how many roads are there from Delhi to Chennai that go through Mumbai?
A
9
B
12
C
16
D
4
Answer
12
Explanation
Solution
The correct option is (B): 12
Explanation: Total Number of roads from Delhi to Chennai via Mumbai
= 3 ×4=12