Mental AbilityBasic Arithmetic (NCO Cyber Olympiad (SOF) Class 8): Questions 1  9 of 96
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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 Arithmetic
Question
A certain sum of simple interest becomes double in 10 years. In how many years will it become four times?
Choices
Choice (4)  Response  

a.  40 years  
b.  20 years  
c.  5 years  
d.  50 years 
Question number: 3
» Mental Ability » Basic Arithmetic
Question
=?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 4
» Mental Ability » Basic Arithmetic
Question
=?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 5
» Mental Ability » Basic Arithmetic
Question
The difference of two numbers is 9 and the difference of their square is 54. The sum of the number is________
Choices
Choice (4)  Response  

a.  8  
b.  4  
c.  6  
d.  2 
Question number: 6
» Mental Ability » Basic Arithmetic
Question
=?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 7
» Mental Ability » Basic Arithmetic
Question
A certain sum of simple interest becomes its three times in 30 years. In how many years will it becomes double?
Choices
Choice (4)  Response  

a.  20 years  
b.  5 years  
c.  60 years  
d.  15 years 
Question number: 8
» Mental Ability » Basic Arithmetic
Question
If 16 employees can complete 32 tasks in 8 days, how many tasks can 8 employees complete in 4 days?
Choices
Choice (4)  Response  

a.  16  
b.  8  
c.  12  
d.  14 
Question number: 9
» Mental Ability » Basic Arithmetic
Question
The sum of two numbers is 14 and the difference of their square is 28. The difference of the number is________
Choices
Choice (4)  Response  

a.  2  
b.  4  
c.  0  
d.  1 