Question

Sn=2380 n=36 a = 4 d = ?
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Answer 1

sn=n/2(2a+(n-1).d

2380=36/2(2*4+(36-1).d

2380=18(8+35d)

2380/18=8+35d

132.22-8=35d

124.22/35=d

3.54= d

This is the answer of this question

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