Factors I - Challenging

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

25

and

105

?

A

1050

B

525

C

2625

D

250

Question 2: What is LCM of

14

and

196

?

A

392

B

196

C

1372

D

2744

Question 3: What is LCM of

12, 15

A

75

B

90

C

60

D

72

Question 4: Write

108

as a product of prime numbers

A

27 \cdot 4

B

11 \cdot 11

C

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

D

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

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

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

B

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

C

2 \cdot 3 \cdot 31

D

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

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

116, 24

?

A

4

B

2

C

12

D

1

Question 8: What is HCF of

425

and

952

?

A

17

B

1

C

68

D

85

Question 9: What is HCF of

320

and

860

?

A

20

B

40

C

32

D

320

Question 10: Solve:

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

A

5040

B

10800

C

2520

D

10080

Test: Factors I - Challenging

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