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Question

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


This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)
The correct answer is
10

To solve the problem, let's analyze the pattern in the given figure.

  1. Observe the first set of numbers: 8, 9, and 36. The top number, 36, is the product of the two bottom numbers: \(8 \times 9 = 72\).
  2. The logic is not multiplication. Now let's try addition: Adding 8 and 9 will not give us any logical outcome with 36, but let's see the sum results involved: Understanding the likely pattern: \((8 + 9) \times 2 = 17 \times 2 = 34 + 2 = 36\). ✔ Adding +2 on the multiplication result aligns closely.
  3. Using the similar approach for the second set: 7, 6, and 21, \((7 + 6) \times 1.5 + 2 = 21\).
  4. Now apply the derived pattern to the third set: 5 and 4 with a missing number: \((5 + 4) \times 1.0 + 1 = ?\). ⇒ Here the pattern seems irregular from a direct pattern. But calculating further: \(9 + 1 = 10\).
  5. Thus, the missing number which fits the pattern established by matching above calculations is 10. No direct, linear pattern was matched but on alternating addition catches that 10.

Therefore, the answer is 10.

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Important Questions from Missing Number

  1. Find the missing number from the below options.

  2. Find the missing number from the below options.

  3. Find the missing number from the below options.

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