HCF & LCM MCQ Set 4

HCF & LCM MCQ SET 4

1.  The HCF of two natural numbers A & B is 39 and their LCM is equal to 390 . How many sets of values of A and B are possible?

(a) 2

(b) 3

(c) 4

(d) 8

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Answer: C

2. Product of two numbers is 2028 and their H.C.F. is 13 . The number of such pairs is :

(a) 1

(b) 2

(c) 3

(d) 4

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Answer: B

3. HCF and LCM of two 3-digit numbers are 16 and 2640 respectively . Find the numbers?

(a) 264 , 120

(b) 240 , 176

(c) 300 , 160

(d) 192 , 176

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Answer: B

4. HCF and LCM of two 3-digit numbers are 23 and 1771 respectively . Find the sum of their numbers :-

(a) 414

(b) 391

(c) 460

(d) 322

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Answer: A

5. Suppose p and q are the LCM and HCF respectively of two positive number . If p : q = 14 : 1 and pq = 1134 , then what is the difference between the two numbers?

(a) 27

(b) 35

(c) 45

(d) Cannot be determined due to insufficient data

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Answer: C

6. The L.C.M. of two numbers is 495 and their H.C.F. is 5 . If the sum of the numbers is 100 , then their difference is

(a) 10

(b) 46

(c) 70

(d) 90

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Answer: A

7. LCM and HCF of two numbers are 90 and 15 , respectively . If the sum of two numbers is 75 , then find the greater number .

(a) 60

(b) 45

(c) 75

(d) 90

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 Answer: B

8. The difference of two numbers is 14 . Their LCM and HCF are 441 and 7 . Find the two numbers?

(a) 63 and 49

(b) 65 and 48

(c) 64 and 50

(d) 64 and 49

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Answer: A

9. The LCM of two numbers is five times their HCF . If the product of two numbers is 20480 , then find their HCF and LCM , respectively .

(a) 64 & 320

(b) 56 & 280

(c) 48 & 240

(d) 46 & 230

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Answer: A

10. LCM of two numbers is 22 times their HCF . If one of the number is 132 and the sum of LCM and HCF is 276 , then what is the other number?

(a) 30

(b) 20

(c) 24

(d) 25

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Answer: C