Discussion
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- Question
A student can divide her books into groups of 5, 9 and 13. what is the smallest possible number of the books ?
Options- A. 487
- B. 585
- C. 635
- D. 705
- Correct Answer
- 585
ExplanationThe smallest possible number of books = L.C.M of 5, 9 and 13.
Therefore, L.C.M of 5,9 and 13 is = 5 x 9 x 13 = 585. - 1. The product of two 2-digit numbers is 2160 and their H.C.F. is 12. The numbers are
Options- A. (12, 60)
- B. (72, 30)
- C. (36, 60)
- D. (60, 72) Discuss
- 2. LCM of two co-prime numbers a and b is (a is greater than b):
Options- A. a
- B. a+b
- C. ab
- D. b Discuss
- 3. The LCM and HCF of two numbers are 4284 and 32, respectively. If one of the numbers is 672, then the second number is;
Options- A. 102
- B. 64
- C. 204
- D. 92 Discuss
- 4. A natural number, when divided by 9, 10, 12 or 15, leaves a remainder of 3 in each case. What is the smallest of all such numbers?
Options- A. 183
- B. 153
- C. 63
- D. 123 Discuss
- 5. The LCM of 72 and 84 is:
Options- A. 12 × 6 × 7
- B. 6 × 2 × 7
- C. 12 × 7 × 3
- D. 72 × 84 Discuss
- 6. Find the HCF of 3341 and 3328.
Options- A. 257
- B. 337
- C. 13
- D. 31 Discuss
- 7. If the product of two numbers is 3026 and their LCM is 89, then their HCF is :
Options- A. 33
- B. 34
- C. 35
- D. 29 Discuss
- 8. The minimum value of LCM of given numbers is ........... the product of all the given numbers.
Options- A. always greater than
- B. always less than
- C. always equal to
- D. None Discuss
- 9. The HCF of two numbers is 11 and their LCM is 330. If one of the number is 55. Find the other number.
Options- A. 33
- B. 66
- C. 44
- D. 77 Discuss
- 10. If the product of two numbers is 4941 and their LCM is 81, then their HCF is :
Options- A. 60
- B. 59
- C. 35
- D. 61 Discuss
Search Results
Correct Answer: (36, 60)
Correct Answer: ab
Correct Answer: 204
Correct Answer: 183
Explanation:
LCM of 9,10,12,15 is 180
Smallest natural number to get remainder of 3 is (180 + 3) = 183
Correct Answer: 12 × 6 × 7
Correct Answer: 13
Correct Answer: 34
Correct Answer: None
Correct Answer: 66
Correct Answer: 61
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