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Aug
29
awarded  Supporter
Aug
29
revised Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.
The link gives a good intuiton but the explanation given here was a bit misleading, hence removing it.
Aug
29
suggested suggested edit on Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.
Aug
29
awarded  Editor
Aug
29
revised Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.
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Aug
23
awarded  Scholar
Aug
23
awarded  Student
Aug
23
accepted Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.
Aug
23
suggested suggested edit on Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.
Aug
23
comment Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.
Sorry guys, the link to wolfram gives a good intuition but the explanation above is a bit misleading, so i have removed it and selected this as the accepted answer.
Aug
23
asked Intuition on the sum of first (n-1) numbers is equal to the number of ways of picking 2 items out of n.