MathematicsMultiples and Factors (NSTSE (National Level Science Talent Search Examination) Class 4): Questions 15  23 of 99
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Question number: 15
» Mathematics » Multiples and Factors
Question
15 and ________ are coprime numbers.
Choices
Choice (4)  Response  

a.  30 

b.  25 

c.  35 

d.  28 

Question number: 16
» Mathematics » Multiples and Factors
Question
An example of prime numbers is:
Choices
Choice (4)  Response  

a.  95 

b.  409 

c.  88 

d.  6 

Question number: 17
» Mathematics » Multiples and Factors
Question
The factor of the number shown on the spike abacus is:
Choices
Choice (4)  Response  

a.  12 

b.  15 

c.  18 

d.  9 

Question number: 18
» Mathematics » Multiples and Factors
Question
The product of all even numbers between 5 and 9 is:
Choices
Choice (4)  Response  

a.  35 

b.  48 

c.  45 

d.  36 

Question number: 19
» Mathematics » Multiples and Factors
Question
________ should be subtracted from 553 to make it divisible by 9.
Choices
Choice (4)  Response  

a.  2 

b.  3 

c.  1 

d.  4 

Question number: 20
» Mathematics » Multiples and Factors
Question
The number is divisible by 3 but not by 6 is:
Choices
Choice (4)  Response  

a.  18 

b.  12 

c.  30 

d.  27 

Question number: 21
» Mathematics » Multiples and Factors
Question
The prime number just before 17 is:
Choices
Choice (4)  Response  

a.  13 

b.  15 

c.  16 

d.  19 

Question number: 22
» Mathematics » Multiples and Factors
Question
Observe the following sums. Then find the sum of ?
—————————————–
—————————————–
Choices
Choice (4)  Response  

a.  36 

b.  56 

c.  63 

d.  81 

Question number: 23
» Mathematics » Multiples and Factors
Question
The next odd number after 56999 is:
Choices
Choice (4)  Response  

a. 


b.  57, 001 

c. 


d.  56, 990 
