Numerical Ability Questions for Exams

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Number Sequences- find the missing number in a sequence of numbers

1. Find the next number in the series

4 8 16 32 —
A) 48 B) 64 C) 40 D) 46

2. Find the next number in the series

4 8 12 20 —
A) 32 B) 34 C) 36 D) 38

3. Find the missing number in the series

54 49 — 39 34
A) 47 B) 44 C) 45 D) 46

4. Find the first number in the series

— 19 23 29 31
A) 12 B) 15 C) 16 D) 17

5. Find the next number in the series

3 6 11 18 —
A) 30 B) 22 C) 27 D) 29

6. Find the next number in the series

48 46 42 38 —
A) 32 B) 30 C) 33 D) 34

These number sequences usually consist of four visible numbers plus one missing number.

7. Find the missing number in the series

.
4 3 5 9 12 17 —
A) 32 B) 30 C) 24 D) 26

8. Find the missing numbers in the series

5 6 7 8 10 11 14 — —-
A) 19 B) 17 C) 15 D) 16

9. Find the missing numbers in the series

1 — 4 7 7 8 10 9 —-
A) 6 B) 3 C) 11 D) 13

Answers
1. B The numbers double each time
2. A Each number is the sum of the previous two numbers
3. B The numbers decrease by 5 each time
4. D The numbers are primes (divisible only by 1 and themselves)
5. C The interval, beginning with 3, increases by 2 each time
6. B The interval, beginning with 2, increases by 2 and is subtracted each time
7. D Each number is the sum of the previous and the number 3 places to the left
8. C A There are 2 simple interleaved sequences 5,7,10,14,19 and 6,8,11,15
9. A D There are 2 simple interleaved sequences 1,4,7,10,13 and 6,7,8,9