Mental Ability (NCO Cyber Olympiad Class 6): Questions 137  143 of 394
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Question number: 137
» Mental Ability » Basic Algebra
Question
Given, the value of is ________.
Choices
Choice (4)  Response  

a.  28  
b.  2  
c.  6  
d.  44 
Question number: 138
» Mental Ability » Basic Geometry
Question
In equivalent triangle ABC, D and E are the midpoints of AB and BC respectively. Which of the following is not true?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 139
» Mental Ability » Basic Algebra
Question
Given, the value of is ________.
Choices
Choice (4)  Response  

a.  15  
b.  75  
c.  2  
d.  12 
Question number: 140
» Mental Ability » Basic Arithmetic
Question
By how much must 3 be increased so that it bears same ratio to 10 as 18 to 36?
Choices
Choice (4)  Response  

a.  1  
b.  4  
c.  2  
d.  3 
Question number: 141
» Mental Ability » Basic Arithmetic
Question
Choices
Choice (4)  Response  

a.  2.7  
b.  270  
c.  0.27  
d.  27 
Question number: 142
» Mental Ability » Basic Arithmetic
Question
The subtraction of two irrational numbers________.Choices
Choice (4)  Response  

a.  May be rational in some cases and irrational in some other cases  
b.  An integer  
c.  Is always irrational  
d.  Is always rational 
Question number: 143
» Mental Ability » Basic Arithmetic
Question
By how much must 27 be decreased so that it bears same ratio to 49 as 12 to 28?Choices
Choice (4)  Response  

a.  3  
b.  2  
c.  6  
d.  7 