Question
Download Solution PDFDirection: Study the information given below carefully and answer the questions that follow.
How many pairs of digits are there in the given number, that have as many numbers between them as in the series of natural numbers both in backward and forward direction?
5278643
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven number: 5278643
Thus, we get three pairs,
Forward → (5, 7), (5, 8), (7,8)
Backward → (3, 7), (4, 7), (3,4)
Therefore, there are four pairs which have as many numbers between them as in the original series of natural numbers.
There are six such pairs.
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