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- 1. Multiple Choice
Which method is used to find HCF and LCM?
Factor tree
Division method
Long division
None of these
- 2. Multiple ChoiceList the first 5 multiples of 33, 6 10, 15, 201, 33, 6, 9, 12, 156, 9, 12, 15, 18
- 3. Multiple ChoiceA prime number is...a number that has only one factor.a number that has at least two factors.a number that has more than two factors.a number that has only two factors.
(1 and itself) - 4. Multiple ChoiceWhich one is a multiple of 4?33221824
- 5. Multiple ChoiceFind the HCF of 21 and 2834714
- 6. Multiple ChoiceWhat is the LCM of 4 and 12?481216
- 7. Multiple ChoiceFind the HCF of 12 and 15 ?22 x 3360
- 8. Multiple ChoiceWhat is the LCM of 6 and 8 ?12182436
- 9. Multiple Choice
what are the first 5 prime numbers in ascending order?
2,3,4,5,11
1,2,3,5,11
2,3,5,7,11
2,3,11,7,5
- 10. Multiple Choice
Which of these numbers is not prime?
17
25
23
37
- 11. Multiple Choice
Find the LCM for 6, 18, and 36
6
18
36
108
- 12. Multiple Choice
A number divisible by 2,3,6,9
10
18
30
42
- 13. Multiple Choice
Is 1331 divisible by 11?
yes
no
- 14. Multiple Choice
Find the HCF of 21 and 28
3
4
7
14
- 15. Multiple Choice
L.C.M. stands for __________.
Low Common Multiple
Lower Common Multiple
Lowest Common Method
Lowest Common Multiple
- 16. Multiple Choice
H.C.F. stands for _________.
High Common Fact
Higher Common Factor
Highest Common Fact
Highest Common Factor
- 17. Multiple Choice
L.C.M. of 6 and 11 is:
6
11
66
1
- 18. Multiple Choice
Which shows the prime factorization of 84?
- 19. Multiple Choice
Factors of 12 is
1, 3, 4, 12
1, 2, 6, 12
1, 2, 3, 4, 6, 12
1, 12
- 20. Multiple Choice
Which one are the factor of 21?
3,7,31
1,7,21
1,3,7,31
1,3,7,21
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