Without actual addition find the sum 1+3+5+7+9+11+13+15+17
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Hi ,
***********"***"*******************
Sum of first n odd numbers = n²
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Number of terms from 1 to 17 = n = 9
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 9²
= 81
I hope this helps you.
:)
***********"***"*******************
Sum of first n odd numbers = n²
**************************************
Number of terms from 1 to 17 = n = 9
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 9²
= 81
I hope this helps you.
:)
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