Class 11 Maths MCQ – Series

This set of Class 11 Maths Chapter 9 Multiple Choice Questions & Answers (MCQs) focuses on “Series”.

1. The sequence is same as series.
a) True
b) False
View Answer

Answer: b
Explanation: No, sequence and series both are not same. When we use addition between the terms of sequence, it is said to be series.

2. A series can also be denoted by symbol ____________
a) π an
b) ∑an
c) Φ an
d) θ an
View Answer

Answer: b
Explanation: When we use addition between the terms of sequence, it is said to be series.
We know that addition can also be written in the form of sigma so, series can also be denoted by ∑an.

3. 1+2+3+4 or 10 is a series?
a) 1+2+3+4 only
b) 10 only
c) 1+2+3+4 and 10
d) neither 1+2+3+4 nor 10
View Answer

Answer: a
Explanation: 1+2+3+4 is a finite series of 4 terms.
10 is sum of the terms of this series not a series itself.
advertisement
advertisement

4. Find sum of series 2+3+5+7.
a) 5
b) 10
c) 17
d) infinite
View Answer

Answer: c
Explanation: Sum of the series 2+3+5+7 is finite because given series has finite number of terms. The sum of given 4 terms i.e. 17.

5. Find the sum of first 5 terms of series 2+4+6+………………
a) 14
b) 16
c) 20
d) 30
View Answer

Answer: d
Explanation: Since 2, 4 and 6 all are even numbers so, given series involve all even number terms.
The next two terms will be 8 and 10 so, sum will be 2+4+6+8+10 = 30.
Note: Join free Sanfoundry classes at Telegram or Youtube

6. \(\sum_{i=1}^4\) 2n+3 = _____________________
a) 5
b) 12
c) 21
d) 32
View Answer

Answer: d
Explanation: a1 = 2*1+3 = 5, a2 = 2*2+3 = 7, a3 = 2*3+3 = 9, a4 = 2*4+3 = 11.
Sum = 5+7+9+11 = 32.

7. Which of the following is not a series?
a) Arithmetic series
b) Geometric series
c) Isometric series
d) Harmonic series
View Answer

Answer: c
Explanation: The isometric series is not a series. Rest all are series i.e. arithmetic series, geometric series and harmonic series.
advertisement

Sanfoundry Global Education & Learning Series – Mathematics – Class 11.

To practice all chapters and topics of class 11 Mathematics, here is complete set of 1000+ Multiple Choice Questions and Answers.

advertisement

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.