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 Number Puzzles Questions

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Q:

Guess the Number which satisfies the Logic behind  ?

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A) 7 B) 14
C) 10 D) 19
 
Answer & Explanation Answer: C) 10

Explanation:

Adding the corresponding numbers in first and last figures gives the corresponding number in the middle figure.

i.e, 4 + 3 = 7

13 + 2 = 15

2 + 4 = 6

9 + 1 = 10

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Filed Under: Number Puzzles
Exam Prep: AIEEE , Bank Exams
Job Role: Bank Clerk

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Q:

5 Digits Number?

What 5-digit number has the following features:

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.

Answer

We can make an equation:


3(100000 + x) = 10x+1


(Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number)


Solving this gives:


10x+1 = 3(100000 + x)
10x+1 = 300000 + 3x
10x = 299999 + 3x
7x = 299999
x = 299999/7 = 42857


The answer is 42857 (142857 is three times smaller than 428571).

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Subject: Number Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Project Manager

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Q:

Find the missing number in place of ?

Answer

The missing number in the given number puzzle is "78".


Here the logic is the numbers are from 86 - 91 when we read upside down.

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Subject: Number Puzzles Exam Prep: Bank Exams
Job Role: Bank Clerk , Bank PO

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Q:

Solve The Logical Number Puzzle?

A) 72 B) 76
C) 84 D) 90
 
Answer & Explanation Answer: D) 90

Explanation:

The logic in the given puzzle is 

4 + 4 = 4 * 4+1 = 4 * 5 = 20

5 + 5 = 5 * 5+1 = 5 * 6 = 30

6 + 6 = 6 * 6+1 = 6 * 7 = 42

7 + 7 = 7 * 7+1 = 7 * 8 = 56

Similarly

9 + 9 = 9 * 9+1 = 9 * 10 = 90.

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Filed Under: Number Puzzles
Exam Prep: CAT , Bank Exams , AIEEE

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