If 1 is subtracted from each odd digit and 2 is added to each even digit in the number 9345712, what will be difference between the largest and smallest digits thus formed?

Question

Question

This question was previously asked in

RRB Group D 1 Sept 2022 Shift 2 Official Paper

Answer 1

The logic followed here is:

Given number: 9345712.

Odd digits is decreased by - 1

and, Even digits is increased by + 2

After arrange the numbers:

9345712 ⇒ 8264604

Now, The largest digits after rearranging the series: 8

And, The smallest digits after rearranging the series: 0

So, the difference between the largest and smallest digits is: 8 - 0 = 8.

Hence, the correct answer is "Option 2".