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Question

The three numbers given below are alike in some manner. Identify the number from among the given options, that belongs to this group:

94, 61, 83

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
72

Number Pattern Logic: 94, 61, 83 Group

Identifying the Common Property

The task is to find a number from the options that shares a common characteristic with the given numbers: 94, 61, and 83. First, we must identify the underlying pattern.

Analyzing the Digit Differences

Let's compute the absolute difference between the digits of each number provided:

  • For 94: The digits are 9 and 4. The absolute difference is $|9 - 4| = 5$.
  • For 61: The digits are 6 and 1. The absolute difference is $|6 - 1| = 5$.
  • For 83: The digits are 8 and 3. The absolute difference is $|8 - 3| = 5$.

The consistent pattern observed across these numbers is that the absolute difference between their constituent digits equals 5.

Evaluating the Options

We now apply this identified pattern (digit difference = 5) to each option:

  • Option 1 (96): The difference between its digits is $|9 - 6| = 3$. This does not match the pattern.
  • Option 2 (72): The difference between its digits is $|7 - 2| = 5$. This matches the established pattern.
  • Option 3 (87): The difference between its digits is $|8 - 7| = 1$. This does not match the pattern.
  • Option 4 (75): The difference between its digits is $|7 - 5| = 2$. This does not match the pattern.

Conclusion: The Matching Number

Only the number 72, presented in Option 2, exhibits the property that the absolute difference between its digits is 5. Therefore, 72 belongs to the group defined by 94, 61, and 83.

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Important Questions from Member of a Group

  1. Select the related word from given alternative.

    Chair : Furniture : : Fork : ?
  2. Select the related word from given alternative.

    Book : Library : : File : ?
  3. Select the option that is related to the fifth word in the same way as the second word is related to the first word and the fourth word is related to the third word.

    Year : Month :: Week : Day :: Minute : ?

  4. A family has several children. Each boy in this family has as many sisters as brothers, but each girl has twice as many brothers as sisters. How many brothers and sisters are there?

  5. Find the alternative that can be a member of the given group/class.

    Lock, Block, Fasten

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