Find the highest common factor of 36 and 84.
Correct answer: C. 12
- A. 4
- B. 6
- C. 12
- D. 18Education
Explanation
The factors common to 36 and 84 include 1, 2, 3, 4, 6 and 12, with 12 being the greatest. Equivalently, 84 = 2 x 36 + 12 and 36 is divisible by 12, so the H.C.F. is 12. The likely wrong choice is 6, which is a common factor but not the highest one.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Ratio and Proportion
Ratios compare quantities in the same units, while proportions state that two ratios are equal. Problems cover simplification, division in a given ratio, direct and inverse variation, scale, and missing terms, with attention to the difference between a ratio and a fraction representing part of a whole.
Practise Arithmetic
1,060 free Arithmetic MCQs from Mathematics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Mathematics questions like this
Mathematics is on 76 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Ratio and Proportion questions
Find the lowest common multiple of 24, 36 and 40.
The G.C.D of 1.08, 0.36 and 0.9 is________?
H.C.F of 3240, 3600 and a third number is 36 and their L.C.M is 24 * 35 * 52 * 72. The third number is___________?
H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is___________?
1095/1168 when expressed in simplest form is:
Which of the following has most number of divisors?