CBSE Class 10-Mathematics: Chapter – 5 Arithmetic Progressions Part 20 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 7:

Which term of the sequence is the first negative term?

Answer:

For first negative term

term is first negative term.

Question 8:

The term of an AP is q and term is . Find its term

Answer:

Put the value of d in eq. (i)

Question 9:

If m times the term of an A. P is equal to n times its term, show that the term of the AP is zero.

Answer:

Hence Proved.

Question 10:

The sum of the and terms of an AP is 24 and the sum of the and terms is . Find the first three terms of the AP.

Answer:

On solving equations (i) and (ii)

First three terms are