• Explore GfG Courses

    • HCF

    Last Updated :
    Discuss
    Comments

    Question 1

    Which is the largest number that divides 17, 23, 35, 59 to leave the same remainder in each case ?

    • 2

    • 3

    • 6

    • 12

    Discuss it

    Question 2

    Express 252 as a product of primes.

    • 2 × 2 × 3 × 3 × 7

    • 3 × 3 × 3 × 3 × 7

    • 2 × 2 × 2 × 3 × 7

    • 2 × 3 × 3 × 3 × 7

    Discuss it

    Question 3

    The HCF of two numbers is 36, and their LCM is 1296. If one of the numbers is 144, what is the other number?

    • 288

    • 324

    • 216

    • 252

    Discuss it

    Question 4

    The HCF of two numbers is 15, and their LCM is 180. If one of the numbers is 45, what is the other number?

    • 60

    • 30

    • 75

    • 90

    Discuss it

    Question 5

    Express 1095/1168 in its simplest form.

    • 13/16

    • 15/16

    • 17/26

    • 25/26

    Discuss it

    Question 6

    Find the highest common factor (HCF) of the following three products of numbers:

    1. 4×27×3125
    2. 8×9×25×7
    3. 16×81×5×11×49

    • 180

    • 360

    • 540

    • 1260

    Discuss it

    Question 7

    Calculate the HCF of 36 and 84.

    • 4

    • 6

    • 12

    • 18

    Discuss it

    Question 8

    Calculate the HCF of 1.08, 0.36 and 0.9.
    • 0.03
    • 0.9
    • 0.18
    • 0.108
    Discuss it

    Question 9

    Three numbers are in the ratio 1:2:3 and their HCF is 12. The numbers are:
    • 4, 8, 12
    • 5, 10, 15
    • 10, 20, 30
    • 12, 24, 36
    Discuss it

    Question 10

    The sum of two numbers is 528 and their HCF is 33. The number of pairs of numbers satisfying the above condition is:

    • 4

    • 6

    • 3

    • 5

    Discuss it

    There are 15 questions to complete.

    Take a part in the ongoing discussion
    We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy