Question

Find the sum of the first 50 terms of the A.P:-27,-23,-19,....

Answer 1

Answer:

-24+(50-1)*4

-24+49*4

-24+196

172

last no is 172

and the sum is50/2(-27+172)

25*145=3625

Answer 2

Answer:

here a= -27

d= -23 - (-27) = -23+27 =4 ; n=50

Step-by-step explanation:

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