If five times the 5th term of an A.P. is equal to eight times its 8th term, then
show that its 13th term is zero.
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Here's ur answer dear.
The answer is absolutely right.
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5(a+4d)=8(a+7d)
5a+20d=8a+56d
3a+36d=0
divide by 3
a+12d=0
a13=0
#BAL #answerwithquality
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