NSTSE (National Science Talent Search Exam Unified Council) Class 7: Questions 29  37 of 1732
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Question number: 29
» 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: 30
» 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: 31
» 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: 32
» Mathematics » Fractions and Decimals
Question
is
Choices
Choice (4)  Response  

a.  75.42 

b.  0.7542 

c.  0.07542 

d.  754.2 

Question number: 33
» 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: 34
» 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: 35
» Mathematics » Simple Equations
Question
of a cloth is white, of a cloth is red and remaining 6 meters is painted blue. Find the length of cloth.
Choices
Choice (4)  Response  

a.  65 m 

b.  80 m 

c.  70 m 

d.  90 m 

Question number: 36
» Mathematics » Fractions and Decimals
Question
Difference of 99.99 and 100 is
Choices
Choice (4)  Response  

a.  1.10 

b.  0.11 

c.  0.1 

d.  0.01 

Question number: 37
» Mathematics » Simple Equations
Question
The present age of A is twice that of B. 10 years from now, age of A will be times of B. Find the present ages of A and B respectively.
Choices
Choice (4)  Response  

a.  20,10 

b.  10,20 

c.  20,30 

d.  30,20 
