find the sum of first 12 natural numberseach of which is a multiple of 7
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Answered by
3
7,14,21......84
sn=n/2(a+an)
=12/2(7+84)
=6(91)
=546 is the answer
sn=n/2(a+an)
=12/2(7+84)
=6(91)
=546 is the answer
Answered by
0
sn=n/2(a+an)
7,14,21...84
12/2(7+84)
=546...ansr..✌
7,14,21...84
12/2(7+84)
=546...ansr..✌
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