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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 (8-Mar-2021) (Shift 2)
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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Similar Questions

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    $2$$9$$5$
    $3$$8$?
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Important Questions from Missing Number

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

    131652
    152490
    2336?
  2. Select the set in which the numbers are related in the same way as are the numbers of the given set.

    (NOTE: Operations should be performed on the whole numbers, without breaking down the number into its constituent digits.E.g. 13 - Operations on 13 such as adding /Subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

    (25, 150, 3)

    (18, 180, 5)

  3. Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.

    7 ∶ 35 ∶∶ 21 ∶ 399 ∶∶ 4 ∶ ?

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

    First row - 12, 7, 32

    Second row - 17, 13, 33

    Third row - 14, 8, ?

    (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

  5. Select the number that can replace the question mark (?) in the following pattern.

    5

    6

    7

    8

    9

    115

    206

    ?

    502

    719

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