Find the 5th term of Ap whose 8th term is 9 and 15th termis 65
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Answer:
a8=9 ---------a+7d
a15=65------a+14d
by elimination,
a+7d =9
a+14d=65
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-7d= -56
d= -56/-7=8
a= a+7d=9
a+56=9
a=9-56= -47
∴ a5= a+4d
a5= -47+4 x 8
a5= -47+32
a5 = -15
Step-by-step explanation:
THerefore 15th term of the AP is -15
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