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Deepak Bora

Asked: August 12, 2020In: CBSE, ICSE

If the sum of first 7 terms of an AP is 49 and that of first 17 terms is 289, find the sum of first n terms.

This is the Important question based on Arithmetic progression Chapter of R.S Aggarwal book for ICSE & CBSE Board. In this Question the sum of first two terms of an AP is given. you have to find the sum of ...

Deepak Bora

Asked: July 31, 2020In: CBSE, ICSE

If 10 times the 10th term of an AP is equal to 15 times the 15th term show that its 25th term is zero.

An Important question based on Arithmetic progression Chapter of R.S Aggarwal book for ICSE & CBSE Board. Here the nth term of AP is n times and the second nth term of AP is n times you have to show ...

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If the sum of first 7 terms of an AP is 49 and that of first 17 terms is 289, find the sum of first n terms.

If 10 times the 10th term of an AP is equal to 15 times the 15th term show that its 25th term is zero.