The first n natural numbers, 1 to n, have to be arranged in a row from left to right. The n numbers are arranged such that there are an odd number of numbers between any two even numbers as well as between any two odd numbers. If the number of ways in which this can be done is 72, then find the value of n.
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MT 1 : CAT Exam 2016 in CAT
25 Qs . 25 Marks . 15 Mins
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