Mathematics · Series, Patterns & Logical Reasoning · page 1 of 20

Number Series MCQs with Answers

Includes 29 past paper MCQs (marked).

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Number Series MCQs (1–10)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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1.
Past Paper MCQ
Which one is odd in the sequence: $19, 26, 33, 40, 47, 53$?
Correct Answer: C. $53$
One-liner
The odd one out is $53$ because all other numbers follow an arithmetic progression with a common difference of $7$.
2.
Past Paper MCQ
Complete the number series: $7, 6, 5, 9, 3, 12, 1, 15, \_\_\_\_\_\_\_?$
Correct Answer: D. $-1$
One-liner
The next term in the series is $-1$.
3.
Find the next number in the sequence: $2, 8, 18, 32, \_\_\_\_\_\_?$
Correct Answer: B. $50$
One-liner
The next number in the sequence is $50$, as the $n$th term follows the pattern $2n^2$.
4.
The sum of the numbers: $1, 2, 3, 4, \dots, 99, 100$ is?
Correct Answer: B. $5050$
One-liner
The sum of the first $100$ natural numbers is $5050$.
5.
Which one is the odd one out in the series: $1, 3, 5, 7, 9$?
Correct Answer: C. $9$
One-liner
The odd one out is $9$ because it is a composite number, while all others ($1, 3, 5, 7$) are either prime or unity.
6.
Complete the series: $6, 9, 13, 16, 20, 23, \_\_\_\_$
Correct Answer: D. $27$
One-liner
The next term in the series is $27$.
7.
Find the missing number: $4\ 6\ 7\ 31$, $9\ 8\ 4\ 76$, $7\ 4\ 2\ \_\_\_\_\_$?
Correct Answer: D. $30$
One-liner
The missing number is $30$.
8.
Number series: $7, 9, 12, 17, 24, 35, \_\_\_\_\_?$
Correct Answer: B. $48$
One-liner
The next term in the series is $48$, as the differences between consecutive terms increase by $2$ each time.
9.
What number comes next in the series: $10, 20, 40, 80,$ _?
Correct Answer: C. $160$
One-liner
The next term in the series is $160$, as each term is obtained by multiplying the previous term by $2$.
10.
Complete the series: $1, 2, 6, 12, 36, 72, 216, \, ?$
Correct Answer: C. $432$
One-liner
The next term in the series is $432$.

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Number Series MCQs with Answers

Number Series MCQs (1–10)

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