Question

The sum of firstvterm in ap is100 and sum of first 19 term is 551 find ap

Answer 1

Answer:

Step-by-step explanation:

S5=5/2(a+4d)

100=5/2(a+4d)

200=5a+20d

a+4d=100........(1)

S19=19/2(a+18d)

551=19/2(a+18d)

1102=19a+342d

a+19d=58........(2)

(2)-(1)

a+19d=58

a+4d=40

So now,

d=6/5

Substitute din (1),

So,a=34

AP=34,176/5,182/5,etc.

Please mark me brainliest please buddy

Please mark me brainliest please buddy

Please mark me brainliest please buddy