Here is an Ap: 10,13,…, 94
finding the sum of first 14 terms: S14=14/2 [2*10+ (14-1) 3] = 413
S14=14/2 (10+94) = 728
why are there 2 different answers?
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Because one of them is wrong
cattie2:
sorry
I typed wrong
So what's the problem?
second one sum is wrong you can check it
and first one sum is right
Ok so 14/2 = 2 and 10+94=104. So 14/2(104) = 728.
I still can't get it right. Please help.
I'm trying
but I can't get it right
Ok. I am also trying.
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