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Question

In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

34
175
42
146
52
13?

 

The correct answer is

3

This is a missing-number (diagram) problem: within each box, three of the numbers combine to produce the fourth by one repeated rule.

Label each box by its top pair and its two lower numbers. Test the rule: (top-left × top-right) + bottom-right = bottom-left value.

Box 1: \(3 \times 4 = 12\), then \(12 + 5 = 17\), matching the given 17.

Box 2: \(4 \times 2 = 8\), then \(8 + 6 = 14\), matching the given 14.

So the rule holds: product of the top two numbers plus the bottom-right number gives the remaining number.

Box 3: \(5 \times 2 = 10\), and this must satisfy \(10 + ? = 13\), so \(? = 3\).

The key concept is confirming a single multiply-then-add relationship on the solved boxes before applying it. Hence the missing number is 3.

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Important Questions from Missing Number in Diagram

  1. Choose the correct alternative to replace the question mark (?).

    42 → 26

    71 → 78

    33 → 16

    62 → ?

  2. Study the given pattern carefully and select the number that can replace the question mark (?) in it:

    13 108
     11 
    26 55
     9 
    ? 157
     14 
  3. In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

    3

    11

    5

    45

    2

    4

    6

    44

    3

    7

    8

    ?

  4. In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives

    11

    2

    4

    98

    3

    6

    5

    100

    8

    9

    1

    ?

  5. In the given square, which option will replace the question mark?

    4A

    6C

    2E

    6P

    13R

    7T

    8N

    10P

    ?

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