HCF LCM MCQ Questions Answers – Quantitative Aptitude


11) The LCM of 5,8,12,20 will not be a multiple of

a) 3

b) 9

c) 8

d) 5

View Answer
Option – b)

12) In the above question, find how many times they will ring together during the next 12 min?

a) 9

b) 10

c) 11

d) None of these

View Answer
Option – b)

13) GDC is (x2 – 4) and (x2 +x – 6) is

a) (x + 2)

b) (x – 2)

c) (x2 – 2)

d) (x2 + 2)

View Answer
Option -b)

14) The HCF of two numbers is 21 and their sum is 105. The LCM of the numbers is

a) 189 or 147

b) 126 or 84

c) 84 or 145

d) 126 or 145

View Answer
Option – b)

15) Find the largest number of four digit exactly divisible by 12,15,18 and 27.

a) 9720

b) 9937

c) 9999

d) 9921

View Answer
Option – a)

16) How many numbers are there between 4000 and 6000 which are exactly divisible by 32, 40, 48 and

60?

(a)2

(b) 3

(c) 4
(d) 5

Ans: c


17) In a store, there are 345 L mustard oil, 120 L sunflower oil and 225 L soyabean oil. What will be the

capacity of the largest container to measure the above three types of oil?

(a)8 L

(b) 20 L

(c) 23 L

(d) 15 L

(e) None of the above

Ans: d


18) The LCM of two numbers is 495 and their HCF is 5. If sum of the numbers is 100, then find the difference of the numbers.

(a)10

(b) 46

(c) 70

(d) 90

(e) None of the above

ans: a


19) If HCF of two numbers is 8, which of the following can never be their LCM?

(a) 24

(b) 48

(c) 56

(d) 60

(e); None of the above

ans: a


20) Find the LCM of (2s x 3 x 52 x 7) (24 x 32 x 5 x 72 x 11) and (2 x 3s x 54)

(a) 24 x 33 x 54

(b) 2 x3x7 x5x11

(c; 24x33x54x72x11

(d) 24 x 34 x 54 x 7

ANS: c