New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Select the number that will replace the question mark

    (?) in the following series. 20, 21, 42, 45, 180, ______?______, 1110
    A 186 Correct Answer Incorrect Answer
    B 365 Correct Answer Incorrect Answer
    C 900 Correct Answer Incorrect Answer
    D 185 Correct Answer Incorrect Answer

    Solution

    20 + 1 = 21 21 x 2 = 42 42 + 3 = 45 45 x 4 = 180 180 + 5 = 185 185 x 6 = 1110

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