MathematicsFactors and Multiples (NSTSE (National Science Talent Search Exam Unified Council) Class 5): Questions 25  34 of 84
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Question number: 25
» Mathematics » Factors and Multiples
Question
What is the H. C. F. of 46 and 64?
Choices
Choice (4)  Response  

a.  6 

b.  8 

c.  2 

d.  23 

Question number: 26
» Mathematics » Factors and Multiples
Question
Find the L. C. M of 36 and 54 using prime factorisation method.
Choices
Choice (4)  Response  

a.  27 

b.  98 

c.  50 

d.  108 

Question number: 27
» Mathematics » Factors and Multiples
Question
Which of the following is NOT a pair of twin primes? (Model Test Paper)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 28
» Mathematics » Factors and Multiples
Question
What is the H. C. F. of 90 and 175?
Choices
Choice (4)  Response  

a.  20 

b.  5 

c.  35 

d.  15 

Question number: 29
» Mathematics » Factors and Multiples
Question
What are the common factors of 36 and 72?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 30
» Mathematics » Factors and Multiples
Question
Identify an example for coprime numbers.
Choices
Choice (4)  Response  

a.  18,37 

b.  8,10 

c.  16,26 

d.  12,15 

Question number: 31
» Mathematics » Factors and Multiples
Question
What is the sum of the numbers that are multiples of 6 as well as factors of 36?
Choices
Choice (4)  Response  

a.  68 

b.  56 

c.  72 

d.  36 

Question number: 32
» Mathematics » Factors and Multiples
Question
Find the smallest whole number that is divisible by 12 and 18.
Choices
Choice (4)  Response  

a.  54 

b.  36 

c.  60 

d.  72 

Question number: 33
» Mathematics » Factors and Multiples
Question
Which of these numbers has 2,11,22 and 97 as factors?
Choices
Choice (4)  Response  

a.  2321 

b.  1122 

c.  2134 

d.  4300 

Question number: 34
» Mathematics » Factors and Multiples
Question
Identify the numbers which have only 1 and itself as factors.
Choices
Choice (4)  Response  

a.  Composite numbers 

b.  Coprime numbers 

c.  Twin prime 

d.  Prime numbers 
