Question Detail

When traveling from place A to place B, the person has 10 choices of buses.When coming back from place B to place A, the person again has 10 choices of buses (as there is no restriction that they must take a different bus).By the multiplication principle, the total number of ways to travel from A to B and come back is the product of the number of choices for each leg of the journey.Total ways = (Choices for A to B) × (Choices for B to A) = 10 × 10 = 100.