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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