MathematicsComparing Quantities (NSTSE (National Science Talent Search Exam Unified Council) Class 7): Questions 1  9 of 134
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Question number: 1
» Mathematics » Comparing Quantities
Question
First, second and third terms of a proportion are 5,30 and 20. Then fourth term is
Choices
Choice (4)  Response  

a.  80 

b.  60 

c.  30 

d.  120 

Question number: 2
» Mathematics » Comparing Quantities
Question
In the given proportion 2: 3: : 24: 36 extremes are
Choices
Choice (4)  Response  

a.  3,24 

b.  2,36 

c.  3,36 

d.  2,24 

Question number: 3
» Mathematics » Comparing Quantities
Question
The ratio of the heights of A and B is 5: 7. If B is 2.1 m tall, then the height of A is
Choices
Choice (4)  Response  

a.  1.5 m 

b.  0.3 m 

c.  1.8 m 

d.  2.8 m 

Question number: 4
» Mathematics » Comparing Quantities
Question
Are they in proportion 8: 2 and 4: 16?
Choices
Choice (4)  Response  

a.  No 

b.  Yes 

c.  Sometimes 

d.  None of the above 

Question number: 5
» Mathematics » Comparing Quantities
Question
Ratio symbol is ________ and is read as ________.
Choices
Choice (4)  Response  

a.  =, equal to 

b.  : , is to 

c.  : : , equal to 

d.  None of the above 

Question number: 6
» Mathematics » Comparing Quantities
Question
For 20: 10: : 10: 5, the mean proportion is
Choices
Choice (4)  Response  

a.  10 

b.  100 

c.  5 

d.  20 

Question number: 7
» Mathematics » Comparing Quantities
Question
When a number is reduced by 14, it becomes 30 % of itself. Find the number.
Choices
Choice (4)  Response  

a.  70 

b.  20 

c.  30 

d.  60 

Question number: 8
» 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: 9
» 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 
