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Question

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

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)
The correct answer is
2

Let's analyze the given pattern in the figures and identify the logic behind it to determine the number that replaces the question mark (?).

In each figure, the top two numbers in the stars are added and subtracted respectively to get the bottom two numbers:

  1. For the first figure:
    • Top numbers: \(1\) and \(5\)
    • Bottom numbers: \(12\) (from \(1 + 5 + 6\)) and \(3\) (from \(5 - 1 + 2\))
  2. For the second figure:
    • Top numbers: \(2\) and \(1\)
    • Bottom numbers: \(9\) (from \(2 + 1 + 6\)) and \(12\) (from \(1 - 2 + 13\))
  3. For the third figure:
    • Top numbers: \(2\) and \(?\)
    • Bottom numbers: \(8\) and \(14\)

Let's apply the same logic to the third figure:

  • The sum pattern: \((2 + ? = 8 - 6)\) gives \(? = 2\).
  • The difference pattern: \((? - 2 = 14 - 13)\) gives \(? = 2\).

Thus, the number that can replace the question mark \((?)\) in the figure is 2.

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