Count of triplets (a, b, c) in the Array such that a divides b and b divides c

Count of triplets (a, b, c) in the Array such that a divides b and b divides c

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Given an array arr[] of positive integers of size N, the task is to count number of triplets in the array such that a[i] divides a[j] and a[j] divides a[k] and i < j < k.


Input: arr[] = {1, 2, 3, 4, 5, 6}
Output: 3
The triplets are: (1, 2, 4), (1, 2, 6), (1, 3, 6).

c c# c++ programming-c

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