Answers

2016-03-16T16:42:50+05:30
d=5____let first term be a of the A.P.____ a18-a14___a+(18-1)d-[a+(13-1)d]___a+17*5-a-12*5__85-60=25____ans is (c)25
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2016-03-16T17:03:39+05:30
D=5 and is unknown then a+17(5)-a-12(5)=85-60=25
it is (c)25
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