Mental AbilityBasic Arithmetic (NCO Cyber Olympiad Class 7): Questions 109  115 of 122
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Question number: 109
» Mental Ability » Basic Arithmetic
Question
In an election, two candidates contested. A candidate secured 80 % of the valid votes and is elected by a majority of 156 votes. Find the total number of valid votes.
Choices
Choice (4)  Response  

a.  610 

b.  880 

c.  700 

d.  390 

Question number: 110
» Mental Ability » Basic Arithmetic
Question
A man sold a radio for 1320 and gained 10%, the radio was bought for?
Choices
Choice (4)  Response  

a.  1200 

b.  1790 

c.  980 

d.  850 

Question number: 111
» Mental Ability » Basic Arithmetic
Question
3 children and 9 men completed a certain piece of work in 12 days. Each children takes thrice the time taken by a man to finish the work. In how many days will 9 men finish the same work?
Choices
Choice (4)  Response  

a.  8 

b.  13.3 

c.  12.5 

d.  15.6 

Question number: 112
» Mental Ability » Basic Arithmetic
Question
Two cubes have volumes in the ratio 1: 8. Then the ratio of their sides is
Choices
Choice (4)  Response  

a.  1: 8 

b.  1: 18 

c.  1: 2 

d.  1: 4 

Question number: 113
» Mental Ability » Basic Arithmetic
Question
A man sold a radio for Rs. 1274 and gained 30%, the radio was bought for?
Choices
Choice (4)  Response  

a.  850 

b.  1790 

c.  1850 

d.  980 

Question number: 114
» Mental Ability » Basic Arithmetic
Question
28 % of 450 is ________.
Choices
Choice (4)  Response  

a.  140 

b.  112 

c.  126 

d.  125 

Question number: 115
» Mental Ability » Basic Arithmetic
Question
Human blood WBC’s are expressed in terms of number of red blood cells per cubic mm. Express 9.9 million blood cells per cubic mm terms of scientific notation.
Choices
Choice (4)  Response  

a.  99 

b.  0.99 

c.  0.99 

d.  9.9 
