solve my question please
class 10th AP
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Answer:
an 1= an 2
a+(n-1)d =a+(n-1)d
63+(n-1)*2 =3+(n-1)7
63-3 +2n-7n =-7+2
60-5n =-5
-5n= -5-60
5n = 65
n=13
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