Math, asked by sujanaiska2, 9 months ago

find sum of 20 terms of 11,15,19...

Answers

Answered by tennetiraj86

1

Answer:

answer for the given problem is given

Attachments:

Answered by jhalakagrawal1234

0

Answer:

980

Step-by-step explanation:

Here d = 4

a = 11

n = 20

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

S20 = 20[2*11+(20-1)4]/2

S20 = 10[22+19*4]

S20 = 10(22+76)

S20 = 10*98

S20 = 980.

HOPE THIS WILL HELP U.

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