Math, asked by abhigediya3339, 6 months ago

If a = 2 and d = 4, the S20 =

Answers

Answered by jay19121996

1

S20 = 800

Step-by-step explanation:

Sn = n/2×(2a+(n-1)d)

= 20/2×(2×2+19×4)

= 10×(4+76)

= 10×80

= 800 Ans

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