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 
