Question

In a four digit number the digit in the ones place is 1 more than that in the tens place. The digit in the hundreds place is 5 times that in the tens place.the thousands place is 6 more than the digit in the tens place, what is the number

Answer 1

Its 8421.

Let ones digit be x

Then tens digit will be 2x

Hundreds digit will be 4x

Thousands digit will be 8x

Any digit cannot be greater than 9.

So 8x<9 and x is a whole number.

This is only possible for 1.

So the number becomes 8421.