MathematicsMultiples and Factors (NSTSE (National Level Science Talent Search Examination) Class 4): Questions 83  91 of 99
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Question number: 83
» Mathematics » Multiples and Factors
Question
What is the sum of the least common multiple and highest common factor of the numbers 12 and 18?
Choices
Choice (4)  Response  

a.  38 

b.  40 

c.  42 

d.  44 

Question number: 84
» Mathematics » Multiples and Factors
Question
Number 1 has only one factor. It is neither prime nor composite. It is called ________ number.
Choices
Choice (4)  Response  

a.  Twin prime 

b.  Prime 

c.  Unique 

d.  Composite 

Question number: 85
» Mathematics » Multiples and Factors
Question
Factors of 57: 3 and ________.
Choices
Choice (4)  Response  

a.  19 

b.  34 

c.  23 

d.  57 

Question number: 86
» Mathematics » Multiples and Factors
Question
Write the greatest 2digit number that has and 15 as factors?
Choices
Choice (4)  Response  

a.  45 

b.  15 

c.  20 

d.  75 

Question number: 87
» Mathematics » Multiples and Factors
Question
The factor of the number shown on the spike abacus is:
Choices
Choice (4)  Response  

a.  17 

b.  15 

c.  21 

d.  37 

Question number: 88
» Mathematics » Multiples and Factors
Question
What is the least common multiple of the number?
Choices
Choice (4)  Response  

a.  32 

b.  24 

c.  36 

d.  48 

Question number: 89
» Mathematics » Multiples and Factors
Question
________ is neither prime not composite number.
Choices
Choice (4)  Response  

a.  6 

b.  3 

c.  5 

d.  1 

Question number: 90
» Mathematics » Multiples and Factors
Question
A number is divisible by 5, if the digit in the unit’s place of the number is:
Choices
Choice (4)  Response  

a.  Either 0 or 5 

b.  5 

c.  1 

d.  0 

Question number: 91
» Mathematics » Multiples and Factors
Question
________ is a prime number.
Choices
Choice (4)  Response  

a.  136 

b.  110 

c.  103 

d.  88 
