Number Reasoning Puzzles for practice

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Introduction

Get ready to sharpen your logical thinking and numerical skills with these interesting challenges. These number reasoning puzzles with answers will put your ability to reason and solve problems to the test, providing an entertaining and stimulating experience. Whether you're a job seeker looking to enhance your cognitive abilities or simply a puzzle enthusiast, Nithra Jobs has a collection of engaging logical puzzles for interview with answers to keep you engaged and entertained.

1. Which number replaces the question mark?

A.18
B.16
C.13
D.17
Ans: 18
Explanation:
Moving clockwise, around alternate segments in the chain, one sequence decreases by 1, 2, 3 and 4 each time, while the other increases by 2, 3, 4 and 5.
Ex: (i) 18 - 1 = 17, 17 - 2 = 15, 15 - 3 = 12, 12 - 4 = 8
(ii) 4 + 2 = 6, 6 + 3 = 9, 9 + 4 = 13, 13 + 5 = 18

2. Which number replaces the question mark?

A.12
B.8
C.6
D.9
Ans: 8
Explanation:
Starting with the 20 at the top, one set of numbers increases by 4 each time, written in alternate boxes as you move down the diagram, and the other set of numbers decreases by 3, written in the boxes remaining.
Ex: (i) 20 + 4 = 24, 24 + 4 = 28, 28 + 4 = 32, 32 + 4 = 36
(ii) 20 - 3 = 17, 17 - 3 = 14, 14 - 3 = 11, 11 - 3 = 8

3. Which number replaces the question mark?

A.893
B.897
C.894
D.893
Ans: 894
Explanation:
Starting at the top left, and moving through the diagram in a Z shape, double each number and add 2 to give the next number along.
Ex: 12 + 12 = 24 ⇒ 24 + 2 = 26, 26 + 26 = 52 ⇒ 52 + 2 = 54, 54 + 54 = 108 ⇒ 108 + 2 = 110, 110 + 110 = 220 ⇒ 220 + 2 = 222, 222 + 222 = 444 ⇒ 444 + 2 = 446, 446 + 446 = 892 ⇒ 892 + 2 = 894

4. Which number replaces the question mark?

A.1931
B.1935
C.1937
D.1930
Ans: 1931
Explanation:
Starting with the top 3-digit number, the first digit increases by 2 as you descend, from 7 to 19. The middle digit decreases by 1 each time, and the right-hand digit alternates between 1 and 3.
Ex: (i) First digit: 7 + 2 = 9, 9 + 2 = 11, 11 + 2 = 13, 13 + 2 = 15, 15 + 2 = 17, 17 + 2 = 19
(ii) Middle digit: 9 - 1 = 8, 8 - 1 = 7, 7 - 1 = 6, 6 - 1 = 5, 5 - 1 = 4, 4 - 1 = 3
(iii) Right hand digit alternates between 1 and 3 i.e) 791, 983, 1171, 1363, 1551, 1743, 1931

5. Which number replaces the question mark?

A.45
B.75
C.65
D.85
Ans: 75
Explanation:
In each circle, the lower number equals the product of the top two numbers, subtracting 3 for the left-hand circle, 4 for the middle, and 5 for the right-hand circle.
Ex: (i) 12 * 6 = 72, 72- 3 = 69
(ii)8 * 8 = 64, 64 - 4 = 60
(iii) 16 * 5 = 80, 80 - 5 = 75

6. Can you find the missing number?

A.8
B.10
C.21
D.7
Ans: 7
Explanation:
Reading each row of the diagram as a series of 3-digit numbers, the center 3 digit number equals the sum of the top 2 numbers, and the sum of the lower 2 numbers.
Ex: (i) 179 + 363 = 542
(ii) 275 + 267 = 542.

7. Can you find the missing number?

A.22
B.9
C.3
D.13
Ans: 3
Explanation:
Start with the top left-hand box, and move around the others in a clockwise spiral towards the center. Read each box as a pair of 2-digit numbers, one above the other. The sum of the 2-digit numbers in each box follows the sequence 45, 50, 55, 60 and 65.
Ex: (i) 32 + 13 = 45
(ii)47 + 3 = 50
(iii) 39 + 16 = 55
(iv) 48 + 12 = 60
(v) 22 + 43 = 65

8. Can you find the missing number?

A.10
B.19
C.14
D.11
Ans: 10
Explanation:
Split the left- and right-hand circles in half, vertically. The sum of the numbers in the left-hand half of the left circle appears in the top left-hand segment of the middle circle, and the sum of the numbers in the right-hand half of the left-hand circle appears in the bottom left hand segment of the middle circle. Repeat this pattern for the right-hand circle.
Ex: 2 + 6 + 8 = 16, 6 + 5 + 7 = 18, 4 + 3 + 3 = 10, 9 + 7 + 6 = 22

9. Can you find the missing number?

A.2
B.1
C.6
D.9
Ans: 6
Explanation:
The number at the center of each segment equals the sum of the numbers on the outside of the opposite segment.
Ex: 5 + 2 + 11 = 18, 5 + 6 + 7 = 18, 3 + 3 + 9 = 15, 12 + 2 + 1 = 15, 6 + 1 + 4 = 11, 4 + 5 + 2 = 11, 7 + 3 + 6 = 16, 9 + 4 + 3 = 16

10. What number should replace the question mark?

A.1
B.4
C.6
D.5
Ans: 1
Explanation:
The numbers in the lower circles equal the numbers in corresponding segments in the upper circles multiplied by two, then subtract 3 for the left-hand circle, 4 for the middle and 5 for the right-hand circle.
Ex: Left hand circle: 5 * 2 = 10, 10 - 3 = 7, 2 * 2 = 4, 4 - 3 = 1, 7 * 2 = 14, 14 - 3 = 11, 4 * 2 = 8, 8 - 3 = 5, 6 * 2 = 12, 12 - 3 = 9, 3 * 2 = 6, 6 - 3 = 3
(ii) Middle circle: 3 * 2 = 6, 6 - 4 = 2, 4 * 2 = 8, 8 - 4 = 4, 2 * 2 = 4, 4 - 4 = 0, 5 * 2 = 10, 10 - 4 = 6, 6 * 2 = 12, 12 - 4 = 8, 8 * 2 = 16, 16 - 4 = 12
(iii) (iii) Right hand circle: 4 * 2 = 8, 8 - 5 = 3, 7 * 2 = 14, 14 - 5 = 9, 12 * 2 = 24, 24 - 5 = 19, 3 * 2 = 6, 6 - 5 = 1, 10 * 2 = 20, 20 - 5 = 15, 5 * 2 = 10, 10 - 5 = 5

Conclusion

We hope you enjoyed the challenge and improving your logical reasoning and problem-solving skills. Remember, the ability to think critically and analytically is a valuable asset in various aspects of life, including job interviews and everyday decision-making. Keep exploring and solving puzzles to continue expanding your mental process. Stay tuned for more exciting number reasoning puzzles interview questions and answers and career resources from Nithra Jobs to help you succeed in your professional journey.