" written using the digits "6,2,7,4,3" each only once."

Write all 3 -digit numbers using the digit 2,3,5, taking each digit only once.

Write all 3-digit numbers using the digit 2, 3, 5, taking each digit only once.

How many numbers divisible by 125 can be written by using all the digits 2,3,8,7 and 5 exactly once?

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.