Question

in an ap the sun of 4th and 10th thtmsid 10 and thir product is 24. then find some of first term of an ap​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

a

4

=a+3d

a

8

=a+7d

Therefore,

a+3d+a+10d=24

2a+10d=24

a+5d=12 …… (1)

Again,

a

6

=a+5d

a

10

=a+9d

Therefore,

a+5d+a+9d=44

2a+14d=44

a+7d=22 ……. (2)

Solving equations (1) and (2), we get

d=5 and a=−13

Therefore,

a

1

=a=−13

a

2

=a+d=−13+5=−8

a

3

=a+2d=−13+10=−3