CBSE Class 10-Mathematics: Chapter – 5 Arithmetic Progressions Part 22 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 15:

The ratio of the sums of m and terms of an AP is , show that the ratio of the and term is .


According to question,

Hence Proved

Question 16:

If the sum of first p terms of an AP is the same as the sum of its first q terms, show that the sum of the first term is zero.


Question 17:

For the A. P … . If find


Question 18:

In an AP and terms are respectively and . Prove that



Adding (iv) , (v) and (vi)