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Question

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

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
33

To solve this pattern question, we need to identify the rule used in each triangle.

Let's break down the given pattern:

  1. Observe the numbers at the top and bottom corners of each triangle. For each triangle, there are three numbers at the top, bottom-left, and bottom-right.
  2. The number inside the triangle is derived using a specific pattern involving these numbers.

Analyzing each triangle pattern:

  1. First Triangle: Numbers are 7 (top), 7 (bottom-left), 7 (bottom-right), and 2 (inside).
    • Calculation: (7 + 7 + 7) / 3 = 7. The inner number 2 might be an exception or follows its formula.
  2. Second Triangle: Numbers are 4 (top), 8 (bottom-left), 16 (bottom-right), and 6 (inside).
    • Calculation: (4 + 8 + 16) / 3 = 9.3 approximating but not exactly matching 6.
  3. Third Triangle: Numbers are 8 (top), 17 (bottom-left), 15 (bottom-right), and 4 (inside).
    • Calculation: (8 + 17 + 15) / 3 = 13.3 and deduced indirectly by 4.
  4. Fourth Triangle: Numbers are 6 (top), 27 (bottom-left), ? (bottom-right), and 10 (inside).
    • Calculation: (6 + 27 + ?) / 3 must lead close enough to deduce correctly.

To identify the missing number, note the established rule connecting the numbers:

  • Rule: Geometric or arithmetic scheming unknown.

Finally, given the correct option as per the question:

  • Select 33 for the missing place.

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Important Questions from Missing Number in Diagram

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

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

    13 108
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    4

    6

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    ?

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