Mental AbilityBasic Arithmetic (NCO Cyber Olympiad Class 7): Questions 102  108 of 122
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Question number: 102
» Mental Ability » Basic Arithmetic
Question
A boat covers a certain distance downstream in 2 hour, while it comes back in 1 hours. If the speed of the stream be 5 kmph, what is the speed of the boat in still water?
Choices
Choice (4)  Response  

a.  25 kmps 

b.  35 kmps 

c.  12 kmps 

d.  11 kmps 

Question number: 103
» Mental Ability » Basic Arithmetic
Question
The average age of 15 children in a class is 7 years. If the teacher’s age is included, the average age becomes 10 years. Find the teacher’s age.
Choices
Choice (4)  Response  

a.  55 

b.  42 

c.  35 

d.  45 

Question number: 104
» Mental Ability » Basic Arithmetic
Question
. If = 0.008, then will be ________
Choices
Choice (4)  Response  

a.  0.125 

b.  1 

c.  0.0625 

d.  0.20 

Question number: 105
» Mental Ability » Basic Arithmetic
Question
A shopkeeper declares a sale of electronics item, giving 15 % discount. If the net sale price of an electronic item is rupees 5000, what is its market price?
Choices
Choice (4)  Response  

a.  550 Rs. 

b.  952 Rs. 

c.  5882.35 Rs. 

d.  500 Rs. 

Question number: 106
» Mental Ability » Basic Arithmetic
Question
If the area of a triangle with base x is equal to the area of a square with side x, then the altitude of the triangle is.
Choices
Choice (4)  Response  

a.  3x 

b.  x 

c. 


d.  2x 

Question number: 107
» Mental Ability » Basic Arithmetic
Question
The value of is
Choices
Choice (4)  Response  

a.  1.466 

b.  2.30 

c.  1.00 

d.  4.55 

Question number: 108
» Mental Ability » Basic Arithmetic
Question
In an election, two candidates contested. A candidate secured 40 % of the valid votes and is elected by a majority of 200 votes. Find the total number of valid votes.
Choices
Choice (4)  Response  

a.  700 

b.  1000 

c.  880 

d.  450 
