Mental AbilityBasic Arithmetic (NCO Cyber Olympiad (SOF) Class 10): Questions 1  5 of 67
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Question number: 1
» Mental Ability » Basic Arithmetic
Question
In the given question, some relationships have been expressed through symbols as defined below:
Mark the option which gives the correct relationship.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 2
» 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. 

Question number: 3
» Mental Ability » Basic Arithmetic
Question
Six years hence a man’s age will be three times his son’s age and six years ago he was seven times as old as his son. The present ages of the man and his son respectively are.
Choices
Choice (4)  Response  

a.  48,12  
b.  64,20  
c.  42,16  
d.  40,10 
Question number: 4
» Mental Ability » Basic Arithmetic
Question
A bus for Mumbai leaves every forty minutes from a bus stand. An enquiry clerk told a passenger that the bus had already left ten minutes ago and the next bus will leave at 10: 50 a. m. At what time did the enquiry clerk give this information to the passenger?
Choices
Choice (4)  Response  

a.  9: 55 a. m.  
b.  10: 20 a. m.  
c.  10: 25 a. m.  
d.  10: 10 a. m. 
Question number: 5
» Mental Ability » Basic Arithmetic
Question
Two girls agree to go on a road trip together. They travel km on the first day. On the second day they travel 5 km more than half of the distance they travelled on the first day. On the third day they drove 4 times as far as they did on the second day. If they drove a total of 12,000 km, the value of x is
Choices
Choice (4)  Response  

a.  3588  
b.  1196  
c.  4784  
d.  2392 