How many different three-letter initials are there that begin with an A?

Answer 1

teshome hambissa

first space filled with A this implies that n(first)=1.

second space filled with all letters from a-z this implies that n(second)=26.

third space filled with all letters from a-z this implies that n(third)=26.

therefore by principle of counting

1x26x26=676.