NEW Today's quiz is live — 10 questions, 5 minutes. Play now

Class 9 · Mathematics · Ganita Manjari

8. Predicting What Comes Next: Exploring Sequences

Try question 1

The next term of the sequence 2, 5, 8, 11, … is

Tap an answer to check.

Answer and explanation

Answer: B. 14

Each term increases by 3.

Open this question →

Try question 2

If aₙ = 2n + 1, the first term is

Tap an answer to check.

Answer and explanation

Answer: C. 3

a₁ = 2 × 1 + 1 = 3.

Open this question →

Try question 3

The sum of the first 10 natural numbers is

Tap an answer to check.

Answer and explanation

Answer: C. 55

n(n + 1)/2 = 10 × 11/2 = 55.

Open this question →

All 5 questions of this chapter, with explanations →