Math, asked by Nanish8107, 8 days ago

The S11 of a sequence where the first term is 10 and the common difference is 7.

Answers

Answered by ynandunavadeep45321

0

Answer:

495

Step-by-step explanation:

Sn = n/2(2a + (n-1)d)

S11 = 11/2(2(10) + (11-1)7)

S11 = 11/2(20 + 70)

S11 = 11/2(90)

S11 = 495

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