Question

is there any 4 digit number (digits non repeating) when multiplied by 4...the result is its reverse
please urgent
no stupid people invited....

Answer 1

Hello

Lets say the number is written as ABCD. Multiplying it by 4, gives you DCBA
By divisibility of 4, BA is a two-digit number divisible by 4. Now, the largest possible value of ABCD is 2499, because anything more will result in a five digit number when multiplied by 4.