Math, asked by 8080bebikumari, 11 months ago

Find the sum of 20 terms of the AP √2, 2√2,3√2,...

Answers

Answered by griffolyan

0

Answer:

a= 2½

n= 20

d= a3-a2 = 2½

sn= n/2(a + (n-1)d)

sn= 20/2(2*2½+19*2½)

sn= 10*21*2½

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