Factors I - Challenging

Question 1: What is LCM (the Least Common Multiple) of

25

and

105

?

A

2625

B

250

C

525

D

1050

Question 2: What is LCM of

14

and

196

?

A

196

B

2744

C

1372

D

392

Question 3: What is LCM of

12, 15

A

90

B

72

C

60

D

75

Question 4: Write

108

as a product of prime numbers

A

11 \cdot 11

B

2 \cdot 2 \cdot 3 \cdot 3 \cdot 3

C

2 \cdot 2 \cdot 3 \cdot 3 \cdot 5

D

27 \cdot 4

Question 5: Write

99

as a product of prime numbers

A

3 \cdot 3 \cdot 3 \cdot 2 \cdot 2

B

3 \cdot 3 \cdot 11

C

2 \cdot 3 \cdot 3 \cdot 3 \cdot 3

D

2 \cdot 2 \cdot 3 \cdot 11

Question 6: Write

186

as a product of prime numbers

A

3 \cdot 3 \cdot 3 \cdot 3 \cdot 5

B

2 \cdot 3 \cdot 31

C

2 \cdot 2 \cdot 3 \cdot 3 \cdot 11

D

2 \cdot 3 \cdot 3 \cdot 5 \cdot 11

Question 7: What is HCF (the Highest Common Factor) of

116, 24

?

A

2

B

1

C

12

D

4

Question 8: What is HCF of

425

and

952

?

A

68

B

85

C

1

D

17

Question 9: What is HCF of

320

and

860

?

A

20

B

32

C

320

D

40

Question 10: Solve:

2^{5} \cdot 3^{2} \cdot 5 \cdot 7

A

2520

B

10800

C

10080

D

5040

Test: Factors I - Challenging

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