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Question 131
How many pairs of digits are there in the number 27651489 each of which has as many digits between them in the number as when the digit are rearranged in descending order within the number
Solution
Original Number: 27651489
Number after arranging the digits in descending order 98765421
Now the pairs of digits which have same number of digits between them in original and new number are:
75 74 65 58 59 89
So clearly the required number of pairs is greater than 3, hence option 5 is the correct choice.
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