MathematicsMultiples and Factors (NSTSE (National Level Science Talent Search Examination) Class 4): Questions 73  82 of 99
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Question number: 73
» Mathematics » Multiples and Factors
Question
41 and 51 are ________ numbers.
Choices
Choice (4)  Response  

a.  Twin prime 

b.  Coprime 

c.  Prime 

d.  Composite 

Question number: 74
» Mathematics » Multiples and Factors
Question
________ is the smallest prime number.
Choices
Choice (4)  Response  

a.  4 

b.  2 

c.  1 

d.  5 

Question number: 75
» Mathematics » Multiples and Factors
Question
A number which when divided by 2, leaves zero as remainder, is ________ number.
Choices
Choice (4)  Response  

a.  Even 

b.  Prime 

c.  Twin prime 

d.  Odd 

Question number: 76
» Mathematics » Multiples and Factors
Question
Consecutive prime numbers with a difference of 2 between them are called ________.
Choices
Choice (4)  Response  

a.  Twin primes 

b.  Prime 

c.  Composite 

d.  Coprime 

Question number: 77
» Mathematics » Multiples and Factors
Question
The prime factors of 36 are:
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 78
» Mathematics » Multiples and Factors
Question
The greatest prime number less than 240 is:
Choices
Choice (4)  Response  

a.  233 

b.  237 

c.  239 

d.  241 

Question number: 79
» Mathematics » Multiples and Factors
Question
A number is divisible by 9, if the sum of its digits is divisible by:
Choices
Choice (4)  Response  

a.  9 

b.  0 

c.  7 

d.  Question does not provide sufficient data or is vague 

Question number: 80
» Mathematics » Multiples and Factors
Question
LCM of 12, 18 is:
Choices
Choice (4)  Response  

a.  72 

b.  36 

c.  54 

d.  48 

Question number: 81
» Mathematics » Multiples and Factors
Question
________ is composite number.
Choices
Choice (4)  Response  

a.  23 

b.  19 

c.  12 

d.  17 

Question number: 82
» Mathematics » Multiples and Factors
Question
The number 10 has 4 factors. The table below lists the number of factors for some numbers. (Model Test Paper)
Number

Number of factors

11

2

13

2

15

4

17

2

19

2 
From this we can say that the number of prime numbers between 10 and 20 is:
Choices
Choice (4)  Response  

a.  4 

b.  Can’t say 

c.  0 

d.  2 
