Question Detail
Question
There are 6 letters and 3 post boxes. The number of ways in which these letters can be posted is -
Correct Answer
Option B is the correct answer.
Detailed Explanation
This is a problem of assigning each letter to one of the post boxes. Each letter has an independent choice of post box.For the first letter, there are 3 post box choices.For the second letter, there are 3 post box choices....and so on, for all 6 letters.So, the total number of ways = 3 * 3 * 3 * 3 * 3 * 3 = 3^6.
Hint
Consider the choices for each individual letter. Each letter can go into any of the 3 post boxes independently.