Find the sum of first 100 natural numbers

Asked by admin @ in Math viewed by 327 People

Find the sum of first 100 natural numbers.

Answered by admin @


Given Question is to find the sum of natural numbers from 1 + 2 + ...... + 100.

Let a be the first term and d be a common difference.

First-term a = 1.

Common difference d = 1

Last term l = 100.


We know that sum of n terms of an ap sn = n/2(a + l)

                                                                 s100 = 100/2(1 + 100)

                                                                          = 50(101)

                                                                          = 5050.


Therefore the sum of first 100 natural numbers = 5050.


Hope this helps!

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