Logical Reasoning

Sequence & Series

Easy

Find the missing number in the series:

5 15 9 ? 11 33 13 39

✅ Correct Option: 3

The series works in pairs where the second number is three times the first: $(5, 15)$ , $(9, ?)$ , $(11, 33)$ , $(13, 39)$ . So the missing term is $9 \times 3 = 27$ .

2026: 14 May Shift 2

In the following question, an alphanumeric series is given as

5FU, 9IS, 13LQ, ?, 21RM

Choose the missing term (?) out of the given alternatives.

2026: 29 May Shift 2

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

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

2022: 26 Aug Shift 1

Complete the series: 39, 8, 15, 24, 35______.

2022: 8 Aug Shift 1

Complete the series;

52, 58, 60, 66, 70, 72, ....

2022: 17 Aug Shift 1

Arrange the following words as they occur in the english dictionary.

(a) Explosive

(b) Explicit

(d) Exposition

(e) Explore

Choose the correct answer from the options given below.

2025: 19 May Shift 2

What numbers should replace the question marks if the same sequence has to be followed in the given series:

71, 81, 74, 77, 77, 73, 80, 69, ?, ?, ?, ?

(A) 65

(B) 86

(D) 83

Find the missing number in the series: 5 15 9 ? 11 33 13 39

Solution

Related questions:

Keyboard Shortcuts

CUET General Test Past Year Questions (Topic-Wise)

Find the missing number in the series:

5 15 9 ? 11 33 13 39