Question
Tue July 17, 2012 By:

Find the some of first 50 natural numbers?

Expert Reply
Wed July 18, 2012
Firt 50 natural numbers are 1, 2, ... 50.
It is an AP with first term = 1 and common difference = 1
 
Using formula of sum of n terms, we have:
 
S50 = 50/2 [2 * 1 + (50 - 1)(1)]
      = 25 * [2 + 49]
      = 25 * 51
      = 1275
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