Question

in the following APs, find the missing terms in the boxes. _____, 13_____, 3​

Answer 1

Answer:

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Answer 2

Given

a2=13

a+d=13-----(1)

a4=3

a+3d=3----(2)

By elimination method

Subtract (2) from (1)

a+3d=3

-a+d=13

_______

2d= -10

d= -5

________

Putting the value of d in (1)

a+(-5)=13

a=18

Now,a3=a+2d

a3=18+2(-5)

a3=18-10

a3=8

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