Question

If k , k-2 , 3k are in AP , then k = _______.


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Answer 1

Step-by-step explanation:

common difference,d=3k-(k-2)

d=3k-k+2

d=2k+2,a=k

k-2 is 3rd term of given ap

k-2=a+d

k-2=k+2k+2

k=3k+2+2

k-3k=4

-2k=4k=(-2)

Answer 2

$\large\bf{\underline\purple{❥solution:-}}$

❥common difference,d=3k-(k-2)

❥d=3k-k+2

❥d=2k+2,a=k

❥k-2 is 3rd term of given ap

❥k-2=a+d

❥k-2=k+2k+2

❥k=3k+2+2

❥k-3k=4

-2k=4k=(-2)