Factor & Multiple MCQs

 

Factor & Multiple MCQs

1: Prime factorization of 56 is:

• a) 14×2²
• b) 7×2³
• c) 28×2
• d) 7×2²

b) 7 x 23

2: The numbers divisible by 2 are called _________ numbers.

• a) Prime 
• b) Odd 
• c) Even 
• d) Whole 

c) Even

3: Which of the following is a prime number?

• a) 8
• b) 4
• c) 2 
• d) None of these

c) 2

4: A_____ is a number which divides the dividend completely leaving no remainder.

• a) quotient 
• b) multiple
• c) factor 
• d) none of above

c) factor

5:   3³x5=__________

• a) 135
• b) 128
• c) 225
• d) 45

a) 135

6: Which one is not true:

• a) A number is always an unlimited number of multiples.
• b) The number itself and 1 are always the factors of the given number.
• c) Odd number is the number which is a multiple of 2
• d) Prime number is a number which has only two factors.

c) Odd number is the number which is a multiple of 2

7: A natural number which has more than two factors is called _______ number.

• a) even 
• b) odd 
• c) prime 
• d) composite 

d) composite

8: 3²  x  5²=__________

• a) 225 
• b) 60
• c) 525
• d) 125

a) 225

9: A number which is neither nor composite is:

• a) 1
• b) 2
• c) 3
• d) None of these 

a) 1

10: The L.C.M of 45, 60,90 and 120 is:

• a) 260
• b) 360
• c) 460
• d) 560

b) 360

Factorization Questions with Answers

In this section, you will find the most important and repeated factorization MCQs with answers. All these factorization questions cover basic concepts related to L.CM, HCP, basic factorization and much more.

11: Find the least number of students that can be arranged in rows containing 12,15,18 or 21 students each row?

• a) 1215
• b) 1260
• c) 2151
• d) 5160

c) 1260

12: The product of common and non-common factors is called __________.

• a) Multiple 
• b) Composite 
• c) L.C.M
• d) G.C.D

c) L.C.M

13: H.C.F of 48,64 and 120 is:

• a) 48
• b) 24
• c) 120
• d) 8

d) 8

14: Find the greatest number which divides 323 and 305 leaving 7 and 5 respectively as the remainder?

• a) 12
• b) 75
• c) 25
• c) 80

b) 75

15:      2×3²=___________

• a) 6
• b) 9
• c) 12 
• d) 18

16:    2³  x  3²=_____________

• a) 81
• b) 36 
• c) 96
• d) 72 

d) 72

17: Find the least number which when divided by 30,45 and 60 leaves 9 as the remainder?

• a) 17
• b) 131
• c) 51
• d) 189

d) 189

18: The writing form of prime factorization of 200=2³ x 5² is called __________.

• a) Notation 
• b) Factor notation 
• c) Index notation 
• d) Prime factorization

c) Index notation

19: The number which has only two factors i-e 1 and the number itself is called________ number.

• a) Odd
• b) Even 
• c) Prime 
• d) Whole 

c) Prime

20: The number 16 is exactly divisible by :

• a) 4
• b) 8
• c) 16
• d) All of these 

d) All of these

Factorization Multiple Choice Questions

21: 6 is the ________ of 12, 18 and 30.

• a) HCF
• b) LCM
• c) Index
• d) Remainder 

a) HCF

22: Find the greatest length of a piece of rope that can measure completely three other ropes having lengths of 910cm, 945cm and 980cm respectively?

• a) 75 cm 
• b) 45 cm 
• c) 55 cm 
• d) 35 cm 

d) 35 cm

23: The common factors of 24 and 40 are ____________.

• a) 2,4,8
• b) 2,3,4,6,8
• c) 1,2,4,20
• d) 1,2,4,8

d) 1,2,4,8

24: The HCF and LCM of 12,15 and 40 are:

• a) 1 and 20
• b) 1 and 120 
• c) 2 and 120 
• d) 3 and 40

b0 1 and 120

25: A number is exactly divisible by 5 if the last digit of the number is either__________.

• a) 1 or 2
• b) 5 or 0
• c) 6 or 4 
• d) 9 or 8

b) 5 or 0

26: Point out the number which is exactly divisible by 6:

• a) 13572
• b) 6123
• c) 2656
• d) 27927

a) 13572

27:   2x2x2x3x3x3=_______

• a) 118
• b) 216
• c) 48
• d) 224

b) 216

28:  26 x 33 =_________

• a) 1728
• b) 2856
• c) 1212 
• d) 1620

a) 1728

29: (1)6=_________

• a) 6
• b) 1
• c) 16
• d) 61

b) 1

30: Which of the following number is not exactly divisible by 9?

• a) 918
• b) 4536
• c) 88262 
• d) 15603

d) 15603