Which number will replace the question mark (?) in the following series? 1, 2, 6, 12, ?, 72, 216 Option 1: 24 Option 2: 32 Option 3: 36 Option 4: 216

Answer: 36. Solution: The multipliers alternate between 2 and 3: 1 x 2 = 2, 2 x 3 = 6, 6 x 2 = 12, 12 x 3 = 36, 36 x 2 = 72, 72 x 3 = 216. So the missing term is 36.

Logical Reasoning

Sequence & Series

Easy

Which number will replace the question mark (?) in the following series?

1, 2, 6, 12, ? , 72, 216

216

✅ Correct Option: 3

The multipliers alternate between 2 and 3: $1 \times 2 = 2$ , $2 \times 3 = 6$ , $6 \times 2 = 12$ , $12 \times 3 = 36$ , $36 \times 2 = 72$ , $72 \times 3 = 216$ . So the missing term is 36.

2023: 30 May Shift 3

Study the following arrangement carefully and answer the question given below.

M D E K 7 B I 4 M J N E 7 6 Z U V W I 3 H 4 F

How many such numbers are there in the above sequence each of which is immediately preceded by a consonant and immediately followed by a vowels ?

2025: 20 May Shift 1

Study the table given carefully and choose the correct number option that shall come in place of '?':

5	14	12
48	135	?
8	9	10

2023: 19 June Shift 1

17th term of the A.P. 13, 16, 19, 22, 25, . . . . is :

2025: 24 May Shift 2

Complete the following series:

ane_ba_ebb_neb_

(A) b

(B) n

(D) a

Choose the correct sequence from the options given below:

2026: 12 May Shift 2

In the following series, some of the letters are missing. Identify the sequence of letters from the given options which will complete the series.

m n o n o _ q o p q r _ p _ rs _ u

(A) p

(B) q

(D) t

Choose the correct sequence answer from the options given below:

2026: 30 May Shift 2

Which of the following list of numbers is/are an Arithmetic Progression?

(A) -2, 2, -2, 2, -2, ...

(B) 1, -1, -3, -5, ...

(D) 20, 17, 14, 11, ...

Choose the correct answer from the options given below:

Which number will replace the question mark (?) in the following series? 1, 2, 6, 12, ? , 72, 216

Solution

Related questions:

Keyboard Shortcuts

CUET General Test Past Year Questions (Topic-Wise)

Which number will replace the question mark (?) in the following series?

1, 2, 6, 12, ? , 72, 216