Math, asked by ammysingh22, 1 year ago

find the sum first 51 terms of ap whose 2nd & 3rd term are 14 & -18 respectively

Answers

Answered by arvinderchahal

2

Answer:

2nd=a+d, a+2d

Step-by-step explanation:

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

is the formula

Answered by Anonymous

2

Answer:

-1770

Step-by-step explanation:

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