without actual adding, find the sum (a) 1+ 3+5+7+9+11
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Answered by
1
36 is what you get if you add all the numbers together.
Answered by
2
we will solve this question by ap.
Sn=n/2(2a+(n-1)d).
S6=6/2(2×1+(5)2)
S6=3×12
=36
hope it will help.
Sn=n/2(2a+(n-1)d).
S6=6/2(2×1+(5)2)
S6=3×12
=36
hope it will help.
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