if 8 times the 8th term of an ap is equal to 15 times the 15 term find its 23rd term
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8(a+7d)=15(a+14d)
8a+56d=15a+210d
7a+154d=0
on dividing by 7 we have
a+22d=0
which is 23th term
8a+56d=15a+210d
7a+154d=0
on dividing by 7 we have
a+22d=0
which is 23th term
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