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Ram travels from Delhi to Mumbai. He can travel either by 2 different trains or by 3 different buses or by 1 plane. So how many different ways he can travel?

Ram travels from Delhi to Mumbai. He can travel either by 2 different trains or by 3 different buses or by 1 plane. So how many different ways he can travel? Correct Answer 6

Concept:

Fundamental principal of multiplication:

Let us suppose there are two tasks A and B such that the task A can be done in m different ways following which the second task B can be done in n different ways. Then the number of ways to complete the task A and B in succession respectively is given by: m × n ways

Fundamental principal of addition:

Let us suppose there are two tasks A and B such that the task A can be done in m different ways and task B can be completed in n ways. Then the number of ways to complete either of the two tasks is given by: (m + n) ways.

Calculation:

Given:

Ram can travel from delhi to mumbai either by 2 different trains or by 3 different buses or by 1 plane.

So, the number of ways in which he can travel from delhi to mumbai

 = 2 + 3 + 1 = 6

 

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