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Differences grow by 4 each time (+4, +8, +12 or +5, +9, +13): find the term

The same question, asked 5 times: 14 Jul 2023 S4*, 19 Jul 2023 S4*, 25 Jul 2023 S4*, 24 Sep 2024 S1*, 26 Sep 2024 S3. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    14 Jul 2023 S4

    4
    Which of the following numbers will replace the question mark (?) in the given series? 15, ?, 27, 39, 55, 75

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  2. Question 2

    19 Jul 2023 S4

    9
    Which of the following numbers will replace the question mark (?) in the given series? 15, 17, ? , 33, 47, 65

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  3. Question 3

    25 Jul 2023 S4

    18
    Which of the following numbers will replace the question mark (?) in the given series? 32, ? , 44, 56, 72, 92

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  4. Question 4

    24 Sep 2024 S1

    3
    Select the number from the given options to complete the series. 32, 36, 44, 56, 72, ___

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  5. Question 5

    26 Sep 2024 S3

    19
    Select the number from among the given options that can replace the question mark (?) in the following series. 672, 677, 686, 699, 716, ?

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