Mental Ability (NCO Cyber Olympiad Class 9): Questions 210  215 of 219
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Question number: 210
» Mental Ability » Basic Algebra
Question
Can you guess this number.
 The number is not an odd number

It has exactly four factors

If you reverse the digits, a prime number is formed

The sum of the digits is a two digit prime number

The number is less than the square root of
 One of the digits is a square number
What number are we thinking of?
Choices
Choice (4)  Response  

a.  44 

b.  73 

c.  74 

d.  75 

Question number: 211
» Mental Ability » Basic Algebra
Question
An influenza virus is 65, 000, 000 meter in diameter. Which of these expresses this distance in scientific notation?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 212
» Mental Ability » Basic Algebra
Appeared in Year: 2011
Question
Simplify:
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 213
» Mental Ability » Basic Algebra
Question
If , find the value of
Choices
Choice (4)  Response  

a.  324 

b.  323 

c.  322 

d.  325 

Question number: 214
» Mental Ability » Basic Algebra
Question
Jigna has a broken fan belt on her car. The belt goes around 2 pulleys, whose centers are 16 cm apart and each pulley is 3 cm in radius. How long should the belt be?
Choices
Choice (4)  Response  

a.  45.45 cm 

b.  69.86 cm 

c.  50.84 cm 

d.  65.87 cm 

Question number: 215
» Mental Ability » Basic Algebra
Appeared in Year: 2011
Question
What is the order of these numbers from least to greatest?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

