NCO Cyber Olympiad (SOF) Class 8: Questions 136  139 of 510
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Question number: 136
» Mental Ability » Number Games
Question
Statement 1: The cube of a number is that number raised to the power of 3.
Statement 2: The natural number n is a perfect cube if for some natural number m.
Statement 3: The cube of an even natural number is even.
Statement 4: The cube of an odd natural number is odd.
State whether the above statements are correct or incorrect?
Choices
Choice (4)  Response  

a.  Statements 1,2 and 3 are incorrect 

b.  Only statements 1 and 3 are correct 

c.  Statements 2,3 and 4 are incorrect 

d.  All statements are correct 

Question number: 137
» Mental Ability » Basic Arithmetic
Question
The monthly salaries of A, B, C are in the proportion 5: 3: 8. If C’s monthly salary is Rs. 800 more than that of A, then B’s annual salary is
Choices
Choice (4)  Response  

a.  Rs. 12000 

b.  Rs. 4000 

c.  Rs. 10200 

d.  Rs. 9600 

Question number: 138
» Mental Ability » Basic Statistics
Question
A man goes to a place at the rate of 8 kmph. He comes back on a bicycle at 12 kmph. His average speed for the entire journey is:
Choices
Choice (4)  Response  

a.  5.4 kmph 

b.  10 kmph 

c.  4.8 kmph 

d.  5 kmph 

Question number: 139
» Non Verbal Reasoning » Paper Folding
Question
In the following question, a paper of the given geometrical shape is folded and punched as shown. How will the paper look when unfolded? Select your answer from the answer figures given below.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
