How many 4-digit odd numbers can be formed using the digits 1,2,4 and 7 only once such that when the first and last digit are interchanged, the number is divisible by 4.

How many 4-digit odd numbers can be formed using the digits 1,2,4 and

1.	How many 4-digit odd numbers can be formed using the digits 1,2,4 and 7 only once such that when the first and last digit are interchanged, the number is divisible by 4.
Answer» ANSWER :2417, 4721, 4127