hamburger menu
All Coursesall course arrow
adda247
reward-icon
adda247
    arrow
    arrow
    arrow
    Value of x for which x, (x+1), (x+3) are all prime numbers is
    Question

    Value of x for which x, (x+1), (x+3) are all prime numbers is

    A.

    3

    B.

    2

    C.

    0

    D.

    1

    Correct option is B

    Given
    x, (x+1), and (x+3) are all prime numbers.

    Formula Used
    A prime number is a natural number greater than 1 that has only two divisors: 1 and itself.

    Solution
    Let us check the given options.

    If x = 0, the numbers are 0, 1, 3 (0 and 1 are not prime).

    If x = 1, the numbers are 1, 2, 4 (1 and 4 are not prime).

    If x = 2, the numbers are 2, 3, 5 (All three are prime numbers).

    If x = 3, the numbers are 3, 4, 6 (4 and 6 are not prime).

    Thus, x = 2 is the only value that satisfies the condition.

    So the correct answer is (b)

    Free Tests

    Free
    Must Attempt

    UPTET : Paper 1 Full Mock - 01

    languageIcon English
    • pdpQsnIcon150 Questions
    • pdpsheetsIcon150 Marks
    • timerIcon150 Mins
    languageIcon English
    Free
    Must Attempt

    UPTET : Paper 2 Maths & Science Full Mock - 01

    languageIcon English
    • pdpQsnIcon150 Questions
    • pdpsheetsIcon150 Marks
    • timerIcon150 Mins
    languageIcon English
    Free
    Must Attempt

    UPTET : Paper 2 Social Science Full Mock - 01

    languageIcon English
    • pdpQsnIcon150 Questions
    • pdpsheetsIcon150 Marks
    • timerIcon150 Mins
    languageIcon English
    test-prime-package

    Access ‘TG TET’ Mock Tests with

    • 60000+ Mocks and Previous Year Papers
    • Unlimited Re-Attempts
    • Personalised Report Card
    • 500% Refund on Final Selection
    • Largest Community
    students-icon
    415k+ students have already unlocked exclusive benefits with Test Prime!
    Our Plans
    Monthsup-arrow