Mental Ability (NCO Cyber Olympiad (SOF) Class 10): Questions 1  6 of 198
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Question number: 1
» Mental Ability » Basic Geometry
Question
The Volume of a solid metallic sphere is 2512 . It is melted and recast into solid right circular cones of radius 5 cm and height 16 cm. Calculate the number of cones recast.
Choices
Choice (4)  Response  

a.  9 

b.  6 

c.  8 

d.  7 

Question number: 2
» Mental Ability » Basic Algebra
Question
If , which expression is equivalent to ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 3
» Mental Ability » Days and Dates
Question
If Tuesday falls on 25^{th} December 1990, what day will be on 25^{th} December 1992?
Choices
Choice (4)  Response  

a.  Monday 

b.  Sunday 

c.  Tuesday 

d.  Friday 

Question number: 4
» Mental Ability » Basic Statistics
Question
Find the mean marks of students from the following cumulative frequency table:
Marks  Number of Students 
0 and above 10 and above 20 and above 30 and above 40 and above 50 and above 60 and above 70 and above 80 and above 90 and above 100 and above  80 76 71 65 58 50 41 31 20 8 0 
Choices
Choice (4)  Response  

a.  78.9 

b.  54.6 

c.  62.5 

d.  57.5 

Question number: 5
» Mental Ability » Basic Algebra
Question
Indicate in which one of the following equations x is neither directly nor inversely proportional to y.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 6
» Mental Ability » Basic Geometry
Question
In the figure drawn below, and are parallel and . What is ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

