Mathematics · Series, Patterns & Logical Reasoning · page 14 of 20

Number Series MCQs with Answers

Includes 29 past paper MCQs (marked).

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Number Series MCQs (131–140)

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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131.
What comes next in the series: $63, 48, 35, 15, \_\_\_$?
Correct Answer: A. $2$
One-liner
The next term in the series is $2$.
132.
The general term for the sequence $-5, 7, 19, 31, \dots$ is:
Correct Answer: C. $a_n = -5 + 12(n - 1)$
One-liner
The general term of the arithmetic sequence is $a_n = -5 + 12(n - 1)$.
133.
Past Paper MCQ
Considering the following pattern: $2^2 + 1 = 5$, $3^2 + 1 = 10$, $4^2 + 1 = 17$, $5^2 + 1 = 26$, … The 8th line in the pattern is:
Correct Answer: A. $9^2 + 1 = 82$
One-liner
The 8th line follows the pattern $n^2 + 1$ starting from $n = 2$, so the 8th term uses $n = 9$, giving $9^2 + 1 = 82$.
134.
What comes next in this sequence? $5, 10, 20, 40, ?$
Correct Answer: C. $80$
One-liner
The next term in the sequence is $80$ because each term is multiplied by $2$.
135.
If $3 = 6$, $6 = 30$, and $5 = 20$, then $7 = \_\_\_\_\_\_\_\_$?
Correct Answer: A. $42$
One-liner
The pattern is $n \times (n+1)$, so $7 \times 8 =$ $42$.
136.
$5, 25, 125, 625, 3125, \_\_\_\_?$
Correct Answer: C. $15625$
One-liner
The next term in the series is $15625$, as each term is obtained by multiplying the previous term by $5$.
137.
Complete the series: $2, 3, 5, 7, 11, \_\_\_, 17$
Correct Answer: B. $13$
One-liner
The missing number is $13$, as the series consists of consecutive prime numbers.
138.
Find the different number in the series: $36, 16, 64, 49, \dots$
Correct Answer: C. $49$
One-liner
The different number is $49$ because all others are perfect squares of even numbers ($36=6^2$, $16=4^2$, $64=8^2$), while $49=7^2$ is the square of an odd number.
139.
Find the next number in the series: $12, 32, 72, 152, \_\_\_\_\_\_?$
Correct Answer: A. $312$
One-liner
The next number in the series is $312$.
140.
Find the next term in the series: $3, 6, 18, 72, \_\_\_\_\_\_\_$?
Correct Answer: C. $360$
One-liner
The next term in the series is $360$, obtained by multiplying each term by an increasing integer factor.

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Number Series MCQs with Answers

Number Series MCQs (131–140)

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