Math, asked by shivanipathak791, 4 months ago

find the sum of first 20 term
ans A.P is 1,4,7,10

Answers

Answered by vanshbaliyan69493

1

Answer:

Sn = n/2(a + an)

S20 = 20/2(1+1+57)

S20 = 10 ×59

S20 = 590

Step-by-step explanation:

Sorry if you couldn't untderstand but the answer is 590 I think

Answered by gurgobindgahle

1

hope it may help you to understand it

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