Question 22

How many such pairs of digits are there in the number 8314629 each of which has as many digits between them in the number as after arranging the digits in descending order?

Solution

The given number is 8314629. Arranging the digits in descending order, the number is 9864321.

We are to find pairs of digits such that the distance between them is same in both the numbers.

On inspection we find only 4 such pairs, (9,4) , (9,6), (6,4), and (4,2) exist .

Hence, the correct option is FOUR.

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