Question

how many even 4 digit numbers can be formed using the digits 5, 6, 7, and 8 without repeating?

Answer 1

Answer:

There are 16 numbers that can be formed

Answer 2

Answer:

Let the 4-digit number is ending with 6. The remaining three places can be filled using the three-digits 5, 7, 8. Similarly, the number if 4- digit numbers ending with eight is 6. Hence, we get tweleve, 4-digit even combinations with the given digits