Mental Ability (NCO Cyber Olympiad Class 7): Questions 61  63 of 205
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Question number: 61
» Mental Ability » Basic Arithmetic
Question
The average age of 20 children in a class is 8 years. If the teacher’s age is included, the average age becomes 10 years. Find the teacher’s age.
Choices
Choice (4)  Response  

a.  50 

b.  42 

c.  45 

d.  35 

Question number: 62
» Mental Ability » Basic Algebra
Question
Statement 1: If x and y are any two rational numbers such that x < y, then is a rational number lying between x and y.
Statement 2: is a rational number that lies between and .
Is statement 2 an example for statement 1?
Choices
Choice (4)  Response  

a.  Yes 

b.  Information Incomplete 

c.  Can’t say 

d.  No 

Question number: 63
» Mental Ability » Basic Statistics
Question
Which diagram correctly illustrates the relationship between “Computer, Mouse, and TV?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
