Math, asked by sw6546sw, 9 months ago

28. For an A.P., the 5th term is 30 and the 12th
term is100 .find the sum of first 20 terms of the ap

Answers

Answered by bhakti34

0

Answer:

20th term wl

be may be 200

Answered by VerifiedJaat

0

Answer:

HOPE IT HELPS PLEASE FOLLOW ME

Step-by-step explanation:

a+4d=30

a+11d=65

⇒d=5,a=10

∴ sum of 20 items

2

20

(2(10)+(20−1)5)

10(20+95)

1150

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