Math, asked by anshbunker, 4 months ago

If an A. P. a=-6 and d=2.Find the sum of first 20 terms

Answers

Answered by rachitrandad31

7

Answer:

S20 = 20/2 [ 2(-6) + (20-1)(2) ]

S20 = 10 [ -12 + 38 ]

S20 = 10 (26)

S20 = 260

hope it help you

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