Number Arrangement MCQ Quiz - Objective Question with Answer for Number Arrangement - Download Free PDF

Last updated on Jul 15, 2025

Latest Number Arrangement MCQ Objective Questions

Number Arrangement Question 1:

If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 5673128, what will be the difference between the digits which are third from the left and second from the right in the new number thus formed?

  1. 9
  2. 7
  3. 8
  4. 6

Answer (Detailed Solution Below)

Option 3 : 8

Number Arrangement Question 1 Detailed Solution

Given number: 5673128

According to the question, 

Number given 5 6 7 3 1 2 8

Odd digit → (+1)

Even digit → (-2)

(+1) (-2) (+1) (+1) (+1) (-2) (-2)
Resultant number 6 4 8 4 2 0 6

So, difference between the digits which are third from the left and second from the right in the new number thus formed → (8 - 0) = 8

Hence, "Option 3" is the correct answer.

Number Arrangement Question 2:

If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 8271634, how many digits will appear more than once in the new number thus formed?

  1. Three
  2. None
  3. Two
  4. One

Answer (Detailed Solution Below)

Option 3 : Two

Number Arrangement Question 2 Detailed Solution

Given number: 8271634

According to the question, 

Number given 8 2 7 1 6 3 4

Odd digit → (+1)

Even digit → (-2)

(-2) (-2) (+1) (+1) (-2) (+1) (-2)
Resultant number 6 0 8 2 4 4 2

So, digits that appeared more than once in the new number thus formed → 2 and 4 = Two

Hence, "Option 3" is the correct answer.

Number Arrangement Question 3:

This question is based on the five, three-digit numbers given below.
(Left) 535 647 232 804 152 (Right)
(Example: 697 – First digit = 6, second digit = 9 and third digit = 7)
(NOTE: All operations to be done from left to right.)
What will be the resultant if the second digit of the highest number is subtracted from the third digit of the lowest number?

  1. 2
  2. 1
  3. 3
  4. 5

Answer (Detailed Solution Below)

Option 1 : 2

Number Arrangement Question 3 Detailed Solution

Given: (Left) 535 647 232 804 152 (Right)

According to the question:

Given numbers 535 647 232 804 152
Arranged in ascending order 152 232 535 647 804

Second digit of the highest number → 804 → 0

Third digit of the lowest number → 152 → 2

Thus, the resultant if second digit of the highest number is subtracted from the third digit of the lowest number will be → 0 + 2 = 2

Hence, "Option 1" is the correct answer.

Number Arrangement Question 4:

 If 2 is added to each even digit and 1 is subtracted from each odd digit in the number 415796, what will be the sum of the digits which are fifth from the left and first from the right in the new number thus formed?

  1. 12
  2. 16
  3. 14
  4. 10

Answer (Detailed Solution Below)

Option 2 : 16

Number Arrangement Question 4 Detailed Solution

Given number: 415796

According to the question, 

Number given 4 1 5 7 9 6

Odd digit → (-1)

Even digit → (+2)

(+2) (-1) (-1) (-1) (-1) (+2)
Resultant number 6 0 4 6 8 8

So, sum of the digits which are fifth from the left and first from the right in the new number thus formed → 6 0 4 6 8 8  (8 + 8) = 16

Hence, "Option 2" is the correct answer.

Number Arrangement Question 5:

This question is based on the five, three-digit numbers given below.
 (Left) 412 366 307 241 667 (Right)
 (Example: 697 – First digit = 6, second digit = 9 and third digit = 7)
 (NOTE: All operations to be done from left to right.)
 What will be the resultant if the first digit of the highest number is subtracted from the
 third digit of the lowest number?

  1. -6
  2. -4
  3. -5
  4. -2

Answer (Detailed Solution Below)

Option 3 : -5

Number Arrangement Question 5 Detailed Solution

Given number: (Left) 412 366 307 241 667 (Right)

According to the question, 

Number given 412 366 307 241 667
Arranged in ascending order 241 307 366 412 667

First digit of the highest number 667 → 6

Third digit of the lowest number → 241 → 1

So, the first digit of the highest number is subtracted from the third digit of the lowest number → (1 - 6) -5

Hence, "Option 3" is the correct answer.

Top Number Arrangement MCQ Objective Questions

6 6 8 5 5 3 7 3 7 2 5 9 8 7 8 1 5 5 4

Using the above sequence find the term that does NOT belong to the group.

83, 35, 27, 81

  1. 27
  2. 83
  3. 81
  4. 35

Answer (Detailed Solution Below)

Option 1 : 27

Number Arrangement Question 6 Detailed Solution

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Second element in every pair is third to the right of first element except 27.

6 6 8 5 5 3 7 3 7 2 5 9 8 7 8 1 5 5 4

There is a gap of two digits in every number like, there are 5 and 5 between 8 and 3 in 83.

Similarly, there are 7 and 2 between 3 and 5 in 35 and 7 and 8 between 8 and 1 in 81. But there are 5, 8, 8, and 7 between 2 and 7 in 27.

Hence, 27 does not belong to the group.

If 2 is added to each odd digit and 1 is subtracted from each even digit in the number 94387251, what will be the sum of the first, fifth and last digits in the new number thus formed?

  1. 14
  2. 12
  3. 11
  4. 10

Answer (Detailed Solution Below)

Option 3 : 11

Number Arrangement Question 7 Detailed Solution

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According to the given information:
When 2 is added to each odd digit and 1 is subtracted from each even digit in the number 94387251,
           F1 Savita SSC 15-3-23 D22

Now the new number is: 113579173

Now, the sum of the first, fifth and last digit is,
1 + 7 + 3 = 11

Hence the correct answer is option 3)

If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 5613742678, what will be the sum of the digits which are third from the left and second from the right, in the number thus formed?

  1. 10
  2. 11
  3. 9
  4. 8

Answer (Detailed Solution Below)

Option 1 : 10

Number Arrangement Question 8 Detailed Solution

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According to the given condition the series becomes:
F1 Savita Railways 2-1-23 D11
Now we have, 2 as third from left and 8 as second from right.

Sum = 2 + 8 = 10

Hence, the correct answer is option 1).

Comprehension:

Directions: Answer the questions based on the information given below:

378 256 431 875 762

If first and third digits of the given numbers are subtracted then which of the following number will give the second highest resultant?

  1. 875
  2. 378
  3. 762
  4. 431
  5. 256

Answer (Detailed Solution Below)

Option 5 : 256

Number Arrangement Question 9 Detailed Solution

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Given numbers: 378 256 431 875 762

On subtracting first and third digits,

378 = 8 – 3 = 5

256 = 6 – 2 = 4

431 = 4 – 1 = 3

875 = 8 – 5 = 3

762 = 7 – 2 = 5

Hence, 4 is the second highest resultant which is obtained from 256.

If 1 is added to each even digit and 2 is subtracted from each odd digit in the number 45392276, then the sum of digits which are 2nd and 6th from left and right respectively ____.

  1. 11
  2. 8
  3. 4
  4. 6
  5. 13

Answer (Detailed Solution Below)

Option 3 : 4

Number Arrangement Question 10 Detailed Solution

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Given number: 45392276
Even digits: 4, 2, 2, 6
Odd digits: 5, 3, 9, 7
1 is added to each even digit: 5, 3, 3, 7
2 is subtracted from each odd digit: 3, 1, 7, 5
New number: 53173357
Left side 53173357 Right side
2nd number from left: 3
6th number from right: 1
Their sum is: 3 + 1 = 4.
Hence, 4 is the correct answer.

In the following series, how many times is the number 8 NOT followed by the number 4 but is preceded by the number 5?

65823581258343565458658458

  1. 5
  2. 4
  3. 3
  4. 2

Answer (Detailed Solution Below)

Option 1 : 5

Number Arrangement Question 11 Detailed Solution

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The logic followed here is:

Condition to be checked:

i) The number 8 not followed by the number 4 but is preceded by the number 5 are given below:-

5 → 8 → Not 4 (4)

5 8 2 5 8 1 5 8 3 4 3 5 6 5 4 5 8 6 5 8 4 5 8

So, there are 5 pairs in which the number 8 is not followed by the number 4 but is preceded by the number 5.

Hence, "option 1" is the correct answer.

Mistake Points 

Immediately preceded by means immediately before or to come just before.

Immediately followed by means immediately after or to come just after.

In the series 5442673314884743581, the number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is:

  1. 2
  2. 1
  3. 0
  4. 3

Answer (Detailed Solution Below)

Option 2 : 1

Number Arrangement Question 12 Detailed Solution

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Given: 5442673314884743581

The number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is:

F1 Madhuri Railways 11.01.2023 D1

Note: other 4s are not counted because

F1 Madhuri Railways 11.01.2023 D2

Hence, the correct answer is "1".

If in the number 56789, 1 is added to every odd digit and 1 is subtracted from every even digit, then what will be the 3th digit from the left end?

  1. 6
  2. 0
  3. 4
  4. 8
  5. None of these

Answer (Detailed Solution Below)

Option 4 : 8

Number Arrangement Question 13 Detailed Solution

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Given number is: 56789

After 1 is added to every odd digit and 1 is subtracted from every even digit as per the question the number become: 658710

Thus, the 3th digit from the left end will be = 8

Consider the following sequence of numbers : 
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 

How many odd numbers are followed by an odd number in the above sequence? 

  1. 5
  2. 6
  3. 7
  4. 8

Answer (Detailed Solution Below)

Option 2 : 6

Number Arrangement Question 14 Detailed Solution

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Numbers that are not divisible by 2 are odd numbers.

Given sequence of numbers is :

5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 

(5,1) (7,3) (3,9) (5,7) (3,1) (1,5)

Hence, 6 is the correct answer.

How many such odd numbers are there in the following number sequence, each of which has an odd number after and before the odd number?

5 9 7 6 8 9 5 6 9 5 7 8 4 6 9 3 5 8 8 6 7 7 9

  1. Three
  2. Two
  3. One
  4. Four

Answer (Detailed Solution Below)

Option 4 : Four

Number Arrangement Question 15 Detailed Solution

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Left 5 9 7 6 8 9 5 6 9 5 7 8 4 6 9 3 5 8 8 6 7 7 9 Right

odd numbers each of which is an odd number after and before the odd number is; 

5 9 7 6 8 9 5 6 9 5 7 8 4 6 9 3 5 8 8 6 7 7 9

There are four odd numbers that are after and before the odd number.

Hence, "Four" is the correct answer.

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