hamburger menu
All Coursesall course arrow
adda247
reward-icon
adda247
    arrow
    arrow
    arrow
    Find the missing number. 15 36 28 10 20 24 7 9 11 12 25 ?
    Question

    Find the missing number.
    15
    36
    28
    10
    20
    24
    7
    9
    11
    12
    25
    ?

    A.

    17

    B.

    15

    C.

    7

    D.

    35

    Correct option is B

    Logic: (1st + 3rd) = (2nd + 4th)
    Column 1:
    15 + 7 = 10 + 12
    22 = 22 
    Column 2:
    36 + 9 = 20 + 25
    45 = 45 
    Column 3:
    28 + 11 = 24 + ?
    39 = 24 + ?
    ? = 15
    Final Answer: B (15)

    Free Tests

    Free
    Must Attempt

    BSSC General Awareness Section Test 01

    languageIcon English
    • pdpQsnIcon40 Questions
    • pdpsheetsIcon160 Marks
    • timerIcon30 Mins
    languageIcon English
    Free
    Must Attempt

    BSSC Office Attendant Full Mock Test : 01

    languageIcon English
    • pdpQsnIcon100 Questions
    • pdpsheetsIcon400 Marks
    • timerIcon120 Mins
    languageIcon English
    Free
    Must Attempt

    संज्ञा

    languageIcon English
    • pdpQsnIcon10 Questions
    • pdpsheetsIcon40 Marks
    • timerIcon10 Mins
    languageIcon English
    test-prime-package

    Access ‘BPSC AEDO’ Mock Tests with

    • 60000+ Mocks and Previous Year Papers
    • Unlimited Re-Attempts
    • Personalised Report Card
    • 500% Refund on Final Selection
    • Largest Community
    students-icon
    399k+ students have already unlocked exclusive benefits with Test Prime!
    Our Plans
    Monthsup-arrow