Mental AbilityBasic Arithmetic (NCO Cyber Olympiad Class 6): Questions 91  97 of 268
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Question number: 91
» 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: 92
» 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% 

Question number: 93
» 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: 94
» Mental Ability » Basic Arithmetic
Question
Choices
Choice (4)  Response  

a.  2.7 

b.  270 

c.  0.27 

d.  27 

Question number: 95
» 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: 96
» 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 

Question number: 97
» 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. 

