hamburger menu
All Coursesall course arrow
adda247
reward-icon
adda247
    arrow
    arrow
    arrow
    What is the missing number '?' in the series.5, 16, 51, 158, ?
    Question

    What is the missing number '?' in the series.
    5, 16, 51, 158, ?

    A.

    1454

    B.

    1452

    C.

    481

    D.

    483

    Correct option is C

    Given: 5, 16, 51, 158, ?
    Logic: 1st number ×\times 3 then, added consecutive  odd numbers.​
    5 × 3 + 1 = 16
    16 × 3 + 3 = 51
    51 × 3 + 5 = 158
    Similarly,
    158 × 3 + 7 = 481
    The missing term is 481.
    Thus, correct option is (c).

    Free Tests

    Free
    Must Attempt

    Rajasthan GK Subject Test :03

    languageIcon English
    • pdpQsnIcon10 Questions
    • pdpsheetsIcon10 Marks
    • timerIcon8 Mins
    languageIcon English
    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

    General Awareness Subject Test :01

    languageIcon English
    • pdpQsnIcon10 Questions
    • pdpsheetsIcon10 Marks
    • timerIcon8 Mins
    languageIcon English
    test-prime-package

    Access ‘Rajasthan Jail Prahari’ Mock Tests with

    • 60000+ Mocks and Previous Year Papers
    • Unlimited Re-Attempts
    • Personalised Report Card
    • 500% Refund on Final Selection
    • Largest Community
    students-icon
    354k+ students have already unlocked exclusive benefits with Test Prime!
    Our Plans
    Monthsup-arrow