NSTSE (National Science Talent Search Exam Unified Council) Class 5: Questions 390  399 of 1358
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Question number: 390
» Mathematics » Factors and Multiples
Question
is a list of prime number in descending order. What is the value of ?
Choices
Choice (4)  Response  

a.  16 

b.  21 

c.  67 

d.  73 

Question number: 391
» Mathematics » Factors and Multiples
Question
How many twin primes are there between 30 and 50?
Choices
Choice (4)  Response  

a.  9 

b.  8 

c.  10 

d.  5 

Question number: 392
» Mathematics » Factors and Multiples
Question
Find the L. C. M. of
Choices
Choice (4)  Response  

a.  24 

b.  72 

c.  36 

d.  108 

Question number: 393
» Mathematics » Factors and Multiples
Question
Find two common multiples of 15 and 20.
Choices
Choice (4)  Response  

a.  15,30 

b.  20,60 

c.  75,120 

d.  60,120 

Question number: 394
» Mathematics » Fractions
Question
By what number is lesser than?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 395
» Mathematics » Factors and Multiples
Question
Which of the following are not multiples of 2?
Choices
Choice (4)  Response  

a.  Prime number 

b.  Odd number 

c.  Even number 

d.  Composite number 

Question number: 396
» Mathematics » Factors and Multiples
Question
P is the least common multiple of 20 and 40. What is the value of?
Choices
Choice (4)  Response  

a.  2000 

b.  1800 

c.  1200 

d.  1400 

Question number: 397
» Mathematics » Factors and Multiples
Question
What is the L. C. M. of two coprime numbers?
Choices
Choice (4)  Response  

a.  Their product 

b.  Their difference 

c.  Their quotient 

d.  Their sum 

Question number: 398
» Mathematics » Factors and Multiples
Question
When a number Z is added to 7, the sum is divisible by 16. What could the number Z be?
Choices
Choice (4)  Response  

a.  25 

b.  21 

c.  13 

d.  32 

Question number: 399
» Mathematics » Fractions
Question
Find the difference obtained when is subtracted from.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

