Challenging Number Puzzles To Keep You Sharp


Ads

Challenging Number Puzzles To Keep You Sharp

Introduction

Number puzzle is a type of aptitude test that assesses a person's ability to understand and work with numbers. It involves the use of mathematical concepts and skills to solve problems and make decisions. Number puzzles are often used by employers to evaluate the numerical skills of job applicants, particularly in fields such as finance, accounting, and data analysis. Nithra Jobs offers a wide range of job opportunities in Tamil Nadu. In this response, we will explore the importance of numerical reasoning and provide tips on how to improve your numerical reasoning skills.

1. Find the missing number in question.


A.15
B.16
C.21
D.23
Ans: 16
Explanation:
In each star, the value at the center equals the difference between the sum of the top 3 numbers and sum of the bottom 3 numbers and the result is squared.
Ex: (i) [(6 + 2 + 3) - (1 + 5 + 7)] = (11 - 13) = 2 ⇒ = (2)2 = 4
(ii) [(5 + 7 + 2) - (6 + 11 + 4)] = (14 - 21) = 7 ⇒ = (7)2 = 49
(iii) [(4 + 6 + 1) - (2 + 8 + 5)] = (11 - 15) = 4 ⇒ = (4)2 = 16
2. Find the missing number in question.


A.12
B.14
C.16
D.18
Ans: 14
Explanation:
Working through the diagram in each column, the value at the bottom of each columns the sum of the top 2 numbers, minus the sum of the next one number.
Ex: (i) 11 + 6 = 17, 17 - 2 = 15
(ii) 9 + 5 = 14, 14 - 4 = 10
(iii) 8 + 9 = 17, 17 - 3 = 14
(iv) 7 + 14 = 21, 21 - 3 = 18
3. Find the missing number in question.


A.16
B.14
C.13
D.21
Ans: 16
Explanation:
Starting the prime numbers in sequence order and every number subtracted by 1.
Ex: 3 - 1 = 2, 5 - 1 = 4, 7 - 1 = 6, 11 - 1 = 10, 13 - 1 = 12, 17 - 1 = 16
4. What number should replace the question mark?


A.3
B.5
C.6
D.8
Ans: 6
Explanation:
Starting with the top circle, subtracted 3 and multiply value by 3, writing the result in the corresponding segment of the lower circle.
Ex: (i) 12 - 3 = 9, 9 * 3 = 27, 5 - 3 = 2, 2 * 3 = 6, 7 - 3 = 4, 4 * 3 = 12, 4 - 3 = 1, 1 * 3 = 3
(ii) 6 - 3 = 3, 3 * 3 = 9, 8 - 3 = 5, 5 * 3 = 15, 5 - 3 = 2, 2 * 3 = 6, 10 - 3 = 7, 3 * 3 = 21
5. Identify the figure from the question?


A.43
B.49
C.53
D.54
Ans: 54
Explanation:
In each circle, multiply the top of the semicircle and divide it by 2 from the result of bottom circle.
Ex: (i) 9 * 4 = 36 ⇒ 36/2 = 18
(ii) 12 * 2 = 24 ⇒ 24/2 = 12
(iii) 36 * 3 = 108 ⇒ 103/2 = 54
6. Which number replaces the question mark?


A.120
B.180
C.240
D.320
Ans: 240
Explanation:
Moving clockwise, around alternate segment in the chain, one segment increase by 1, 2, 3, 4, 5 each time, while the other multiple by 1, 2, 3,4 ,5.
Ex: (i) 2 + 1 = 3, 2 * 1 = 2, 3 + 2 = 5, 2 * 2 = 4, 5 + 3 = 8, 4 * 3 = 12, 8 + 4 = 12, 12 * 4 = 48, 12 + 5 = 17, 48 * 5 = 240
7. What number comes inside the missing part?


A.3
B.1
C.7
D.5
Ans: 1
Explanation:
In each circle, starting at the top left segment each number increase by 2 and top right segment are decrease by 2 from the result.
Ex: (i) 3 + 2 = 5, 7 - 2 = 5, 8 + 2 = 10, 5 - 2 = 3, 6 + 2 = 8, 4 - 2 = 2
(ii) 9 + 2 = 11, 6 - 2 = 4, 5 + 2 = 7, 8 + 2 = 6, 7 + 2 = 9, 3 - 2 = 1
8. Find missing number in circle?


A.12
B.15
C.16
D.18
Ans: 16
Explanation:
Difference between each left and right column numbers together and square to give the number in the center of the column.
Ex: (i) 7 - 9 = 2, (2)2 = 4
(ii) 11 - 8 = 3, (3)2 = 9
(iii) 9 - 5 = 4, (4)2 = 16
9. Find missing number.


A.55
B.56
C.57
D.58
Ans: 58
Explanation:
Moving from left to right numbers increase by 2, 3, 4, 5 and each number subtract by 1.
Ex: 43 + 2 = 45, 45 - 1 = 44, 44 + 3 = 47, 47 - 1 = 46, 46 + 4 = 50, 50 - 1 = 49, 49 + 5 = 54, 54 - 1 = 53, 53 + 6 = 59, 59 - 1 = 58
10. Find missing number.


A.150
B.176
C.216
D.232
Ans: 216
Explanation:
Starting from the right side bottom and moving anticlockwise around the triangle numbers follow the sequence of cube numbers.
Ex: (1)3 = 1, (2)3 = 8, (3)3 = 27, (4)3 = 64, (5)3 = 125, (6)3 = 216, (7)3 = 343, (8)3 = 384, (9)3 = 729

Conclusion

In conclusion, number puzzles are an excellent way to exercise your brain and improve your math skills. By practicing your numerical reasoning skills through Nithra Jobs, you can improve your problem-solving abilities and increase your confidence in working with numbers. So, whether you're preparing for a job interview or just looking to improve your math skills, take the time to practice your numerical reasoning and sharpen your abilities to work with numbers. Are you seeking job offers in Tamil Nadu? Visit the Nithra Jobs site to get your dream career.

number puzzles

Share :