Mathematics · Series, Patterns & Logical Reasoning · page 8 of 20

Number Series MCQs with Answers

Includes 29 past paper MCQs (marked).

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Number Series MCQs (71–80)

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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71.
Each member of a sequence is called a ?
Correct Answer: B. Term
One-liner
Each member of a sequence is called a term.
72.
What number will come next? $1, 2, 4, 8, 16, \_\_\_\_\_$?
Correct Answer: C. $32$
One-liner
The next number in the series is $32$, as each term is obtained by multiplying the previous term by $2$.
73.
Which of the following sequences is an identical pair among: $8096702$, $8567304$, $9056502$?
Correct Answer: C. $8096702$ and $9056502$
One-liner
The identical pair is $8096702$ and $9056502$, as both have the same digit sum and digital structure.
74.
Find the missing number: Group 1 = $2, 4, 8$; Group 2 = $4, 16, 64$; Group 3 = $6, 36, \_\_\_\_?$
Correct Answer: C. $216$
One-liner
The missing number is $216$ because each group follows the pattern $(x, x^2, x^3)$.
75.
The 21st term of the given Arithmetic Progression $7, 11, 15, 19, \dots$ is:
Correct Answer: C. $87$
One-liner
The 21st term of the AP $7, 11, 15, 19, \dots$ is $87$.
76.
What comes next in the series? $7, 9, 18, 20, 40, 42, \_\_\_?$
Correct Answer: D. $84$
One-liner
The next term in the series is $84$.
77.
Complete the series: $18$, $13$, , $3$
Correct Answer: D. $8$
One-liner
The missing term in the series is $8$.
78.
Meher saves Rs. $4$ in the first week, Rs. $13$ in the second week, and Rs. $22$ in the third week. In which week will her savings reach Rs. $130$?
Correct Answer: C. $15$th week
One-liner
Meher's savings form an arithmetic progression with $a = 4$, $d = 9$, and solving $S_n = \frac{n}{2}[2a + (n-1)d] = 130$ gives $n = \textbf{15th week}$.
79.
Past Paper MCQ
Find the missing number in the series: $6$, $?$, $21$, $33$, $48$.
Correct Answer: C. $12$
One-liner
The missing number in the series is $12$.
80.
Complete the series: $66, 63, 57, 45, \_\_\_\_\_\_$ ?
Correct Answer: A. $21$
One-liner
The next term in the series is $21$, as the differences between consecutive terms double each time: $-3, -6, -12, -24$.

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Number Series MCQs with Answers

Number Series MCQs (71–80)

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