hamburger menu
All Coursesall course arrow
adda247
reward-icon
adda247
    arrow
    arrow
    arrow
    Which of the following numbers will replace the question mark (?) in the given series? 240, 240, 120, 40, 10, ?
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    240, 240, 120, 40, 10, ?

    A.

    8

    B.

    1

    C.

    5

    D.

    2

    Correct option is D

    Given: 240, 240, 120, 40, 10, ?
    Look at the pattern in the sequence:
    From 240 to 240: divide by 1 (240÷1 = 240).
    From 240 to 120: divide by 2 (240 ÷ 2 = 120).
    From 120 to 40: divide by 3 (120 ÷ 3 = 40).
    From 40 to 10: divide by 4 (40 ÷ 4 = 10).
    Following this pattern, the next step would be to divide 10 by 5:
    10 ÷ 5 = 2
    The answer is (d) 2.

    Free Tests

    Free
    Must Attempt

    RRB NTPC UG Level PYP (Held on 7 Aug 2025 S1)

    languageIcon English
    • pdpQsnIcon100 Questions
    • pdpsheetsIcon100 Marks
    • timerIcon90 Mins
    languageIcon English
    Free
    Must Attempt

    CBT-1 Full Mock Test 1

    languageIcon English
    • pdpQsnIcon100 Questions
    • pdpsheetsIcon100 Marks
    • timerIcon90 Mins
    languageIcon English
    Free
    Must Attempt

    RRB Group D Full Mock Test 1

    languageIcon English
    • pdpQsnIcon100 Questions
    • pdpsheetsIcon100 Marks
    • timerIcon90 Mins
    languageIcon English
    test-prime-package

    Access ‘RRB Group D’ Mock Tests with

    • 60000+ Mocks and Previous Year Papers
    • Unlimited Re-Attempts
    • Personalised Report Card
    • 500% Refund on Final Selection
    • Largest Community
    students-icon
    446k+ students have already unlocked exclusive benefits with Test Prime!
    Our Plans
    Monthsup-arrow