Question

the 4th and 8th terms of an appointment is 24 and the sum of it's 6th and 10th term is 44 . find sum of first 10 terms of ap​

Answer 1

Answer:

may be my answer helps you

Step-by-step explanation:

given :- sum of 4

th

and 8

th

term is 24.

a+3d+a+7d=24

2a+10d=24

a+5d=12.....(i)

sum of 6

th

and 10

th

term is 44.

a+5d+a+9d=44

12+a+9d=44......from (i)

a+9d=32

a+5d+4d=32

12+4d=32

d=5

a+25=12

a=−13

AP=−13,−8,−3,2,7,12....