NCO Cyber Olympiad (SOF) Class 8: Questions 419  423 of 510
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Question number: 419
» Mental Ability » Basic Arithmetic
Question
Mrs. Maria wants the students in her class to read a total of 100 books by the end of the session. Students fill in a square in this grid for each book they read. What percent of their goal they have not achieved?
Choices
Choice (4)  Response  

a.  55% 

b.  5.5% 

c.  0.45% 

d.  45% 

Question number: 420
» Computers » Internet & Viruses
Question
The viruses that change their appearance to avoid detection are ________.
Choices
Choice (4)  Response  

a.  Parasitic viruses 

b.  MBR viruses 

c.  DBR viruses 

d.  Polymorphic viruses 

Question number: 421
» Mental Ability » Number Games » Number Analogies
Appeared in Year: 2010
Question
How many 8’s are there in the following number series which are exactly divisible by its immediately preceding number and also divisible by immediately succeeding number?
8 2 4 5 1 7 2 8 4 8 4 2 2 8 2 6 9 8 4 5 4 8 3 2 8 4 3 1 8 3
Choices
Choice (4)  Response  

a.  1 

b.  2 

c.  3 

d.  4 

Question number: 422
» Computers » Memory & Storage Devices
Appeared in Year: 2010
Question
A method of erasing magnetic media and the removal of remnants of previously recorded signals is called ________.
Choices
Choice (4)  Response  

a.  Deram 

b.  Default 

c.  Debug 

d.  Degauss 

Question number: 423
» Mental Ability » Basic Arithmetic
Question
What number is one half of one quarter of one tenth of 400?
Choices
Choice (4)  Response  

a.  4 

b.  5 

c.  10 

d.  0 
