Question

1,3,5,7,9,11,13,15,17,19,21,23,25,27,29 ......how to add them without calculation.

Answer 1

Solution:

1,3,5,7,9,11,13,15,17,19,21,23,25,27,29 ......how to add them without calculation.
/* Sum of first n odd natural
numbers = n² */
Here ,
n = 15
1+3+5+7+...+29 = 15² = 225


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