NCO Cyber Olympiad Class 6: Questions 238  242 of 722
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Question number: 238
» 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: 239
» 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: 240
» Mental Ability » Basic Geometry
Question
In parallelogram ABCD, E and F are the midpoints of AB and CD respectively. Which of the following is not true?
Choices
Choice (4)  Response  

a. 


b.  ED is not parallel to BF 

c.  AF trisects BD 

d.  CE trisects BD 

Question number: 241
» Mental Ability » Basic Geometry
Question
is equal to,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 242
» 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. 

