Question

If 5 times of 5th term of an ap is equal to 8 times of its 8th term .then show 13 th term Is equal to 0

Answer 1

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step by step explanation

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Answer 2

Answer:

Step-by-step explanation:

5a₅=8a₈

5(a+4d)=8(a+7d)

5a+20d=8a+56d

-3a=36d

a=-12d

a₁₃=a+12d

a₁₃= -12d+12d

a₁₃=0