NSTSE (National Level Science Talent Search Examination) Class 5: Questions 387  395 of 1242
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Question number: 387
» Mathematics » Factors and Multiples
Question
How many hundreds are there in the sum of the factors of 200?
Choices
Choice (4)  Response  

a.  4 

b.  536 

c.  400 

d.  40 

Question number: 388
» Mathematics » Factors and Multiples
Question
Find the smallest whole number that is divisible by 15 and 20.
Choices
Choice (4)  Response  

a.  45 

b.  40 

c.  30 

d.  60 

Question number: 389
» Mathematics » Factors and Multiples
Question
Identify the correct statement.
Choices
Choice (4)  Response  

a.  The smallest factor of a number is the number itself. 

b.  The L C M of two coprimes is their product. 

c.  The largest factor of a number is 1. 

d.  The H C F of twin primes is their product. 

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.  21 

b.  67 

c.  73 

d.  16 

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.  10 

c.  5 

d.  8 

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

a.  24 

b.  72 

c.  108 

d.  36 

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

a.  60, 120 

b.  20, 60 

c.  15, 30 

d.  75, 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.  Even number 

b.  Odd number 

c.  Prime number 

d.  Composite number 
