Class 11 Mathematics Chapter 9 Sequences And Series Quiz 43 (9 MCQs)

Quiz Instructions

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1. Evaluate the geometric series below:a$_{1}$ =-2, a$_{n}$ =-1458, r = 3

Correct Answer: A) -2186.

2. Which formula represents this arithmetic sequence:

Correct Answer: B) N + 6.

3. Use Pascal's triangle or the Binomial Theorem to expand (-x + 3y)$^{3}$.

Correct Answer: B) -x$^{3}$ + 9x$^{2}$y-27xy$^{2}$ + 27y$^{3}$.

4. Write the recursive formula of 13, 9, 5 .....

Correct Answer: A) A$_{n}$=a$_{n-1}$-4.

5. Write the explicit formula for the following geometric sequence:3, -12, 48, -192, .....

Correct Answer: D) A$_{n}$ = 3(-4)$^{n-1}$.

6. Evaluate the series:$\sum_{n=1}^63n$

Correct Answer: C) 63.

7. Find the sum of the series $\sum_{k=0}^4k^3$

Correct Answer: A) 100.

8. The symbol $t_1$

Correct Answer: C) First Term.

9. What is the common ratio of this geometric sequence?\{2, 10, 50, 250, ..... \}

Correct Answer: B) 5.