Question

The following problem refers to strings in A, B, ..., Z.

How many three-letter strings are there that begin with H ?

Answer 1

Answer: 676

Explanation:

The total number of letters in English alphabet {From A to Z} = 26

We assume that the repetition of letters is allowed.

If we fix H at the first position , then the number of ways to make three-letter strings that begin with H is given by :-

`1*26*26=676`

Hence, the number of ways to make three-letter strings that begin with H is 676.