Answer :
4521 is the odd number using each of the digits 1, 2, 4 and 5 only once such that when the first and the last digits are interchanged, it is divisibleby 4.
Answer:
The possible numbers are : 4125 and 2415.
Step by step explanation :
Hey Mate,
We have to find the 4 digit odd number, from those digits 1, 2, 4 and 5.
We need to make a number, in which when the first and the last digits are interchanged, it is divisible by 4.
So,
Divisibility rule of 4 : If the last 2 digit of any number is divide by 4, then the whole number is divide by 4.
The number which divide by 4 from those digits (1, 2, 4 and 5) are : 12 and 24.
So, the possible numbers are : 4125 and 2415.