Math, asked by kushalrao047, 2 months ago

find the sum of an A.P 2,7,12,...to 25 terms

Answers

Answered by ravinderpk2006

Step-by-step explanation:

sum = 25/2 (2×2 + ( 25-1) 5).= 25/2 ( 124) = 25×62= 1550

Answered by 20dipankarsaikia04

Answer:

Given a = 2

d= 5

tn = 25

Find the sum→

Sn

→ n/2 [2a +(n-1)d]

→ 25/2[4+120]

→ 25/2(124)

→25× 62

→1550

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