Math, asked by kumarshashi30386, 12 days ago

S↓n -S↓(n-1) = ? a. S↓n b. A↓n c. S↓(n-1) d. A ↓(n-1)

Answers

Answered by prashansa0810

1

Answer:

Answer is b.An

as Sn - Sn-1 = An

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