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CBSE Class 10- Mathematics: Chapter β 5 Arithmetic Progressions Part 22
Question 15:
The ratio of the sums of m and terms of an AP is , show that the ratio of the and term is .
Answer:
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.
Answer:
Question 17:
For the A. P If find
Answer:
Question 18:
In an AP and terms are respectively and . Prove that
Answer:
Similarly,
Adding (iv) , (v) and (vi)