A security code is to consist of 3 different letters of the alphabet from A to Z inclusive except the first letter cannot be a vowel (A, E, I, O, or U). How many different combinations for the security code are there?
A security code is to consist of 3 different letters of the alphabet from A to Z inclusive except the first letter cannot be a vowel (A, E, I, O, or U). How many different combinations for the security code are there?