Mental Ability (NCO Cyber Olympiad (SOF) 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. 

