Math, asked by khushii35, 6 months ago

10. |f an=3-21n, then find the common difference d.

Answers

Answered by anurag2147

1

An = 3- 21n

when n=1

A¹ = 3-21 = 18

when n=2

A² = 3-21×2 = 2-42 = 39

d = A² - A¹ = 39 - 18 = 21

d= 21

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