NSTSE (National Science Talent Search Exam Unified Council) Class 7: Questions 780  787 of 1732
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Question number: 780
» Mathematics » Perimeter and Area
Question
Find the area of the shaded region of the following figure.
ABCD is a rectangle having length 80 cm and breadth 40 cm. P, Q, R and S are midpoints of AB, BC, CD and AD respectively.
Choices
Choice (4)  Response  

a.  400  
b.  800  
c.  1600  
d.  3200 
Question number: 781
» Mathematics » Exponents and Powers
Question
Conjugate surd of is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 782
Question number: 783
» Mathematics » Triangle and Properties
Question
If two angles in a triangle are and , then the third angle is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 784
» Mathematics » Integers
Question
The identity element w. r. t multiplication in integers is ________.
Choices
Choice (4)  Response  

a.  1  
b.  1  
c.  0  
d.  None of the above 
Question number: 785
» Mathematics » Comparing Quantities
Question
By selling an article for Rs. 500 a man loses 15%. At what cost he will sell in order to gain 20%?
Choices
Choice (4)  Response  

a.  580 Rs.  
b.  1000 Rs.  
c.  760 Rs.  
d.  706 Rs. 
Question number: 786
» Mathematics » Exponents and Powers
Question
The value of is
Choices
Choice (4)  Response  

a.  1520  
b.  1400  
c.  1620  
d.  1240 
Question number: 787
Question
20 years ago, when my parents got married, their average age was 25 years, now the average age of my family, consisting of myself and my parents only is 35 years. My present age is
Choices
Choice (4)  Response  

a.  21 years  
b.  16 years  
c.  19 years  
d.  15 years 