TUO
5. Find the sum without actually adding the following
(ii) The first 99 odd natural numbers.
Answers
Answered by
3
Answer:
using ap
a=1,d=2,n=99
sn=n/2(2a+(n-1)d)
=99/2(2+196)
=99/2(198)
=99x99
=891
Answered by
0
Answer:
There is a formula that is n(n+1)÷2....
where n is last no. till which u want to add..
so, 99×(99+1)÷2 =99×50=4950....
That's it.. : )
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