Question

a car company is going to issue new id codes to its employees. Each code will have one digit followed by four letter. The letter V and the digits 3, 4, and 5 will not be used. So, there are 25 letters and 7 digits that will he used. Assume that the letters can be repeated.

Answer 1

175

Explanation:

There are 25 choices of letters. Each of these 25 letters can be followed by one of 7

differentdigits--0, 1, 2, 6, 7, 8, 9.

Therefore there are 25 x 7 = 175 different plates which can be made.