Math activity to find the sum of first n natural number
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Answer:
sum of n natural no. = n(n+1)/2
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Step-by-step explanation:
Method 2 :- The idea is the sum of first n even number is n(n+1), for find the Average of first n even numbers divide by n, hence formula is n(n + 1) / n = ( n + 1). i.e. Average of first n even numbers is n+1. it take 0(1) time
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