Mental Ability (NCO Cyber Olympiad Class 6): Questions 131  136 of 394
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Question number: 131
» Mental Ability » Basic Arithmetic
Question
One bus travels at 3000 and another at 60 . Ratio of their speeds is
Choices
Choice (4)  Response  

a.  3: 1  
b.  1: 3  
c.  4: 2  
d.  2: 4 
Question number: 132
» Mental Ability » Basic Arithmetic
Question
If stands for ‘division’, stands for ‘equal to’, stands for ‘addition’, stands for ‘greater than’, stands for ‘less than’, stands for ‘multiplication’ and stands for ‘subtraction’, then which of the following alternative is correct?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 133
» Mental Ability » Basic Arithmetic
Question
A seller has 15 dresses at the rate of Rs. 450 per dress. If he sold them for Rs. 6400, his loss will be
Choices
Choice (4)  Response  

a.  350 Rs.  
b.  200 Rs.  
c.  300 Rs.  
d.  400 Rs. 
Question number: 134
» Mental Ability » Basic Arithmetic
Question
when expressed as a percentage of , is ________.
Choices
Choice (4)  Response  

a.  9%  
b.  27%  
c.  36%  
d.  25% 
Question number: 135
» Mental Ability » Basic Arithmetic
Question
The product of two irrational numbers________.
Choices
Choice (4)  Response  

a.  Is always rational  
b.  Is always irrational  
c.  May be rational in some cases and irrational in some other cases  
d.  An integer 
Question number: 136
» Mental Ability » Basic Arithmetic
Question
when expressed as a percentage of , is ________.
Choices
Choice (4)  Response  

a.  85%  
b.  87.31%  
c.  75%  
d.  25% 