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Number series: differences are consecutive prime numbers

This type of question, asked 8 times: 14 Jul 2023 S1, 20 Jul 2023 S1, 25 Jul 2023 S1, 25 Jul 2023 S2, 17 Sep 2024 S1, 17 Sep 2024 S3, 23 Sep 2024 S1, 23 Sep 2024 S3. All 8 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    14 Jul 2023 S1

    17
    Which of the following numbers will replace the question mark (?) in the given series? 8, 15, 26, ? , 56, 75

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  2. Question 2

    20 Jul 2023 S1

    2
    Which of the following numbers will replace the question mark (?) in the given series? 18, 23, ?, 41, 54, 71

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  3. Question 3

    25 Jul 2023 S1

    22
    Which of the following numbers will replace the question mark (?) in the given series? 27, 38, ?, 68, 87, 110

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  4. Question 4

    25 Jul 2023 S2

    19
    Which of the following numbers will replace the question mark (?) in the given series? 3, 8, 15, 26, 39, ?

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  5. Question 5

    17 Sep 2024 S1

    19
    Select the number from among the given options that can replace the question mark (?) in the following series. 96,77,60,47,36, ?

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  6. Question 6

    17 Sep 2024 S3

    21
    Select the number from among the given options that can replace the question mark (?) in the following series. 1225, 1184, 1147, 1116, 1087, ?

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  7. Question 7

    23 Sep 2024 S1

    24
    Select the number from among the given options that can replace the question mark (?) in the following series. 389, 420, 457, 498, 541, ?

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  8. Question 8

    23 Sep 2024 S3

    3
    Select the number from among the given options that can replace the question mark (?) in the following series. 45, 52, 63, 76, 93, ?

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