Math, asked by yashbaheti70, 1 year ago

In an AP 8.11,14..... Find Sn-Sn-1

Answers

Answered by aayushg1713

2

Sn - Sn-1 = Tn

now find Tn of this AP

Tn = T₁ + (n-1)d

Tn = 8 + 3n - 3

Tn = 5 + 3n

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