Question 164

How many such pairs of digits are there in the number 53146827 each of which has as many digits between them in the number as when the digits are arranged in ascending order within the number ?

Solution

Number = '53146827'

When the digits are arranged in ascending order, => New number = 12345678

Pairs of digits each of which has as many digits between them in the number as when the digits are arranged in ascending order = (3,6)

Thus, there is only 1 such pair.

=> Ans - (B)

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