if 3rd term of an a.p is four times the first term and 6th term is 17,find the a.p
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Answer:
a3=4a
a6=17
a+2d=4a
2d=3a
d=3/2 a
a+5d=17
a+15/2 a=17
17/2 a=17
a=2
d=3
a1=2
a2=d+a=5
a3=8
AP: 2,5,8.....
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