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Number series: multiply (or divide) by a fixed number and add a growing number (x2+1, x2+2, x2+3 ...)

This type of question, asked 4 times: 11 Sep 2024 S1, 18 Sep 2024 S1, 14 Sep 2025 S1, 24 Sep 2025 S3. All 4 questions below, oldest first.

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  1. Question 1

    11 Sep 2024 S1

    11
    Which of the following numbers will replace the question mark (?) in the given series? 17, 38, 84, ?, 376, 772

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  2. Question 2

    18 Sep 2024 S1

    23
    Select the number from among the given options that can replace the question mark (?) in the following series. 300, 152, 80, 48, 40, 52, ?

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  3. Question 3

    14 Sep 2025 S1

    8
    What comes next: 3, 7, 16, 35, 74, ?

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  4. Question 4

    24 Sep 2025 S3

    3
    Find the number that can replace question mark (?) in the series given below. 20, 62, 189, 571, 1718, ?

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