NCO Cyber Olympiad (SOF) Class 10: Questions 21  24 of 461
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Question number: 21
» Mental Ability » Basic Geometry
Question
The minute hand of a clock is 20 cm long. Find the area of the face of the clock described by the minute hand between 8 AM and 8.35 AM.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 22
» Non Verbal Reasoning » Paper Folding
Question
In the given question a square sheet of paper has been folded and punched as shown. How would the paper look like when unfolded?
Choices
Choice (4)  Response  

a.  
b.  
c.  
d. 
Question number: 23
» 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  60 58 52 46 36 32 28 22 16 6 0 
Choices
Choice (4)  Response  

a.  55  
b.  54.33  
c.  51.2  
d.  56.89 
Question number: 24
» Mental Ability » Basic Arithmetic
Question
20 liters of a mixture contains 10 % water and the rest orange juice. If 3 liters of orange juice be mixed in it, the percentage of water in the new mixture will be
Choices
Choice (4)  Response  

a.  20%  
b.  %  
c. 
 
d. 
