Factors I - Challenging

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

25

and

105

?

A

525

B

1050

C

250

D

2625

Question 2: What is LCM of

14

and

196

?

A

196

B

1372

C

2744

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

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

B

11 \cdot 11

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

2 \cdot 2 \cdot 3 \cdot 11

B

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

C

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

D

3 \cdot 3 \cdot 11

Question 6: Write

186

as a product of prime numbers

A

2 \cdot 3 \cdot 31

B

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

C

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

D

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

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

116, 24

?

A

2

B

1

C

4

D

12

Question 8: What is HCF of

425

and

952

?

A

85

B

17

C

68

D

1

Question 9: What is HCF of

320

and

860

?

A

32

B

320

C

40

D

20

Question 10: Solve:

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

A

10080

B

10800

C

2520

D

5040

Test: Factors I - Challenging

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