How to take terms for AP in some of the problems?Like Divide 40 into 4 parts such that the product of extremes to the product of means is in the ratio 2:3?Like that

Asked by Udit Lilhare | 29th Jan, 2014, 05:17: PM

Expert Answer:

The following ways of selecting terms are generally very convenient. For 3 terms, take a – d, a, a + d (Common difference is d) For 4 terms, take a – 3d, a – d, a + d, a + 3d (Common difference is 2d) For 5 terms, take a – 2d, a – d, a, a + d, a + 2d (Common difference is d) For 6 terms, take a – 5d, a – 3d, a – d, a + d, a + 3d, a + 5d (Common difference is 2d)

Answered by  | 29th Jan, 2014, 05:24: PM

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