Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 7]: Questions 38  46 of 1128
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Question number: 38
» Mathematics » Simple Equations
Question
The average of four numbers is 120. The first is th of the sum of the other three. The first number is
Choices
Choice (4)  Response  

a.  68  
b.  84  
c.  57  
d.  96 
Question number: 39
» Mathematics » Simple Equations
Question
The ratio between two numbers is 5: 3. If each number is increased by 5, the ratio becomes 3: 2. Find the numbers.
Choices
Choice (4)  Response  

a.  25,15  
b.  30,15  
c.  25,20  
d.  30,20 
Question number: 40
» Mathematics » Comparing Quantities
Question
The ratio of the least prime number to the least composite number is
Choices
Choice (4)  Response  

a.  1: 3  
b.  1: 4  
c.  1: 2  
d.  2: 3 
Question number: 41
» Mathematics » Simple Equations
Question
The ratio between two numbers is 9: 5. If each number is increased by 10, the ratio becomes 7: 4. Find the numbers.
Choices
Choice (4)  Response  

a.  250,120  
b.  320,210  
c.  305,105  
d.  270,150 
Question number: 42
» Mathematics » Fractions and Decimals
Question
Example of an improper fraction is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 43
» Mathematics » Fractions and Decimals
Question
Sum of 1.5,12.6,56.198 is
Choices
Choice (4)  Response  

a.  702.98  
b.  70.298  
c.  7029.8  
d.  7.0298 
Question number: 44
» Mathematics » Fractions and Decimals
Question
Product of and is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 45
» Mathematics » Fractions and Decimals
Question
Difference of and is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 46
» Mathematics » Comparing Quantities
Question
The length and width of a tape are 3 m and 27 cm. Write their ratio.
Choices
Choice (4)  Response  

a.  10: 9  
b.  100: 9  
c.  9: 10  
d.  9: 100 