Test:
Factors I - Challenging
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Question 1:
What is LCM (the Least Common Multiple) of
25
and
105
?
A
525
B
1050
C
2625
D
250
Question 2:
What is LCM of
14
and
196
?
A
2744
B
392
C
1372
D
196
Question 3:
What is LCM of
12
,
15
A
60
B
90
C
72
D
75
Question 4:
Write
108
as a product of prime numbers
A
27
⋅
4
B
11
⋅
11
C
2
⋅
2
⋅
3
⋅
3
⋅
5
D
2
⋅
2
⋅
3
⋅
3
⋅
3
Question 5:
Write
99
as a product of prime numbers
A
3
⋅
3
⋅
3
⋅
2
⋅
2
B
2
⋅
3
⋅
3
⋅
3
⋅
3
C
2
⋅
2
⋅
3
⋅
11
D
3
⋅
3
⋅
11
Question 6:
Write
186
as a product of prime numbers
A
3
⋅
3
⋅
3
⋅
3
⋅
5
B
2
⋅
3
⋅
3
⋅
5
⋅
11
C
2
⋅
3
⋅
31
D
2
⋅
2
⋅
3
⋅
3
⋅
11
Question 7:
What is HCF (the Highest Common Factor) of
116
,
24
?
A
1
B
2
C
4
D
12
Question 8:
What is HCF of
425
and
952
?
A
17
B
1
C
85
D
68
Question 9:
What is HCF of
320
and
860
?
A
32
B
320
C
20
D
40
Question 10:
Solve:
2
5
⋅
3
2
⋅
5
⋅
7
A
2520
B
5040
C
10800
D
10080
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