1.

Find the 10 th term of the AP whose 2 nd term is 18 and 4th term is12

Answer»

ANSWER:

Step-by-step EXPLANATION:

a+d=18---(I)

a+3d=12---(II)

(I)-(ii)

-2d=6

d=-3

a=21

a10=21+9(-3)=-6



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