1.

Ten buses are plying between two places A and B. In how many ways a person can travel from A to B and come back?

Answer»

Given, there are 10 buses from A to B. 

So, a person can select any out of 10, therefore, there are 10 ways to travel from A to B. Similarly, he can come back in 10 ways. 

Therefore, total number of ways to travel from A to B round trip = 10 × 10 = 100 ways



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