Mental AbilityBasic Arithmetic (NCO Cyber Olympiad (SOF) Class 7): Questions 47  54 of 122
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 416 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
Question number: 47
» Mental Ability » Basic Arithmetic
Question
If each side of a cube is doubled, its volume
Choices
Choice (4)  Response  

a.  Becomes 6 times 

b.  Becomes 8 times 

c.  Becomes 4 times 

d.  Is doubled 

Question number: 48
» Mental Ability » Basic Arithmetic
Question
In an election, two candidates contested. A candidate secured 30 % of the valid votes and is elected by a majority of 150 votes. Find the total number of valid votes.
Choices
Choice (4)  Response  

a.  375 

b.  570 

c.  400 

d.  510 

Question number: 49
» Mental Ability » Basic Arithmetic
Question
Simplify:
Choices
Choice (4)  Response  

a.  10 

b.  20 

c.  11 

d.  21 

Question number: 50
» Mental Ability » Basic Arithmetic
Question
An ore contain 9 % lead. How many kilograms of the ore are required to get 60 kg of lead?
Choices
Choice (4)  Response  

a.  666.66 kg 

b.  850.78 kg 

c.  544 kg 

d.  144.22 kg 

Question number: 51
» Mental Ability » Basic Arithmetic
Question
Which is greatest in
Choices
Choice (4)  Response  

a.  0.15 

b. 


c. 


d.  None of the above 

Question number: 52
» Mental Ability » Basic Arithmetic
Question
An ore contain 8 % copper. How many kilograms of the ore are required to get 68 kg of copper?
Choices
Choice (4)  Response  

a.  85 kg 

b.  850 kg 

c.  544 kg 

d.  5.44 kg 

Question number: 53
» Mental Ability » Basic Arithmetic
Question
The cost of cultivating a square field at the rate of rupees 360 per hectare is rupees 3240. What is the cost of putting a fence around it at 75 paise per meter?
Choices
Choice (4)  Response  

a.  600 rupees 

b.  900 rupees 

c.  700 rupees 

d.  800 rupees 

Question number: 54
» Mental Ability » Basic Arithmetic
Question
If 30 men working 8 hours a day can do a piece of work in 15 days, in how days will 15 men working for 7 hours a day to do the same piece of work?
Choices
Choice (4)  Response  

a.  55 days 

b.  34.28 days 

c.  30 days 

d.  12 days 
