Hiremee LCM and HCF Questions with Answers

Question 1

Time: 00:00:00
The HCF of two numbers is 12 and their difference is also 12. The numbers are -

66, 78

66, 78

94, 106

94, 106

70, 82

70, 82

84, 96

84, 96

50, 62

50, 62

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12 is the greatest number that divides both 84 and 96

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Question 2

Time: 00:00:00
HCF of three numbers is 12. If they are in the ratio 1:2:3, then the numbers are -

12,24,36

12,24,36

10,20,30

10,20,30

5,10,15

5,10,15

4,8,12

4,8,12

15, 30, 45

15, 30, 45

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Question 3

Time: 00:00:00
The total number of prime factors of the product (8)20×(15)24×(17)15 is -

59

59

98

98

123

123

4

4

14

14

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Question 4

Time: 00:00:00
The least number which is divisible by 12, 15, 20 and is a perfect square, is -

400

400

900

900

1600

1600

3600

3600

4200

4200

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Question 5

Time: 00:00:00
Three piece of timber 42 m, 49 m and 63 m long have to be divided into planks of the same length. What is the greatest possible length of each plank?

7m

7m

14m

14m

42m

42m

63m

63m

78m

78m

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Question 6

Time: 00:00:00
Find the largest number of four digits which is exactly divisible by 27,18,12,15.

9700

9700

9710

9710

9720

9720

9730

9730

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Question 7

Time: 00:00:00
HCF of 22×32×72 and 2×34×7 is ?

128

128

126

126

146

146

434

434

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Question 8

Time: 00:00:00
If (x - 4) is the HCF of x2 - 8x + 15 and x2 - kx +1 , then what is k?

8/15

8/15

4

4

5

5

15/8

15/8

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Question 9

Time: 00:00:00
What is LCM of 36/225, 48/150 , 72/65 ?

36/65

36/65

144/5

144/5

72/225

72/225

288/5

288/5

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Question 10

Time: 00:00:00
The L.C.M. Of 2, 2.7 and 0.09 is:

5.4

5.4

0.54

0.54

5.4

5.4

0.054

0.054

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["0","40","60","80","100"]
["Need more practice! \n","Keep trying! \n","Not bad! \n","Good work! \n","Perfect! \n"]

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