Mental Ability (NCO Cyber Olympiad (SOF) Class 8): Questions 1  8 of 241
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Question number: 1
» Mental Ability » Basic Arithmetic
Question
If 12 workers can color 24 houses in 8 days, how many houses can 6 workers color in 4 days?
Choices
Choice (4)  Response  

a.  3 

b.  24 

c.  6 

d.  12 

Question number: 2
» Mental Ability » Basic Geometry
Question
The length of the minute hand on a wall clock is 21 cm. The area swept by the minute hand in 30 minutes is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 3
» Mental Ability » Basic Geometry
Question
The largest possible square is inscribed in a circle of unit radius. The area of the square in square units is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  2 

Question number: 4
» Mental Ability » Basic Geometry
Question
If the radius of a cone is increased by 50%, its volume is increased by
Choices
Choice (4)  Response  

a.  125% 

b.  50% 

c.  75% 

d.  150% 

Question number: 5
» Mental Ability » Basic Geometry
Question
The length of a rope by which a horse must be tethered to graze over an area of 1386 is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 6
» Mental Ability » Basic Statistics
Question
The value of is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 7
» Mental Ability » Basic Geometry
Question
The measure of an angle which is five times its complement is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 8
» Mental Ability » Basic Geometry
Question
If the area of a triangle with base x is equal to area of a square of side x, the altitude of the triangle is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

