Answers

2016-01-24T18:59:57+05:30
A7( 7th term)=16 a7-a5=12 ie, 2d=12 ie, d=6. a7=a+6d=16 a+36=16 a=16-36=-20 ie,a= -20 we get the value of first term(a) = -20 and common difference (d)=6 ie, the series is -20, -14, -8, -2, 4, 10, 16,.........
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