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Question

The number that least fits this set: (324, 441, 97 and 64) is _______________

The correct answer is
97

Number Set Properties

We need to find the number that is different from the others in the set (324, 441, 97, 64). This involves identifying a pattern shared by most numbers in the set and finding the one that doesn't follow it.

Perfect Square Check

Let's check if each number is a perfect square, meaning it is the result of squaring an integer:

  • 324: This number is a perfect square because $18 \times 18 = 18^2 = 324$.
  • 441: This number is also a perfect square, as $21 \times 21 = 21^2 = 441$.
  • 97: This number is not a perfect square. There is no integer whose square equals 97.
  • 64: This number is a perfect square, since $8 \times 8 = 8^2 = 64$.

Outlier Number Found

Three numbers in the given set – 324, 441, and 64 – are perfect squares.

The number 97 is the only number in the set that is not a perfect square.

Therefore, 97 least fits this set because it does not share the common property of being a perfect square.

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Important Questions from Number Series

  1. Select the number from among the given options that can replace the question mark (?) in the following series.

    37, 52, 74, 104, 143, ?

  2. Select the number that can replace the question mark (?) in the following series.

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  3. Select the number from among the given options that can replace the question mark (?) in the following series.

    10, 14, 31, 35, 73, 77, ?

  4. Select the number from among the given options that can replace the question mark (?) in the following series.

    215, 231, 256, 292, ?

  5. Select the number from among the given options that can replace the question mark (?) in the following series.

    6, 6, 8, 24, 28, 140, ?

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