1.

Find the sum of ap -37,-33,-29.....to 12 term​

Answer»

Answer:

-180

Step-by-step EXPLANATION:

by USING the formula of Sn

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

n=12

a=-37

d=4

put the value of n,a and d in formula

12/2 (2×-37 +(12-1)4)

= 6(-74 + 44)

= 6(-30)

=-180

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