Question

how many 4 digit numbers can be formed using 0 1 2 3 4 when repetion is allowed​

Answer 1

Step-by-step explanation:

The fourth digit of such a 4-digit even number can be one of : [2, 4] = 1 of 2 ways. Therefore, the total possible 4-digit numbers formed: 5 * 5 * 5 * 2 = 250.