12
35
−15
7312
Correct answer is A
Sum to infinity
∑ = arn − 1
= a1 − r
a = 14
r = 18 ÷ 14
r = 1s × 41
= 12
S = 1÷41 − 12
= 14 ÷ 12
= 14 × 21
= 12
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