Q12 of 50 Page 26

Write the whole numbers in the arithmetic sequence . Do they form an arithmetic sequence?

Let a =


a2 =


a3 =


a2-a = -


a3-a2 = -


As a3-a2 = a2-a


Hence, the common difference is same, i.e. the sequence forms an AP.


More from this chapter

All 50 →
10

Prove that the arithmetic sequence 5, 8, 11, … contains no perfect squares.

 11

The angles of a pentagon are in arithmetic sequence. Prove that its smallest angle is greater than 36°.

 1

Find the sum of the first 25 terms of each of the arithmetic sequences below.

11, 22, 33, …

 1

Find the sum of the first 25 terms of each of the arithmetic sequences below.

12, 23, 34, ….