Mental AbilityBasic Arithmetic (NCO Cyber Olympiad Class 7): Questions 65  71 of 122
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Question number: 65
» Mental Ability » Basic Arithmetic
Question
Which of the following can be the exact multiple of 2?
Choices
Choice (4)  Response  

a.  27 

b.  15 

c.  63 

d.  12 

Question number: 66
» Mental Ability » Basic Arithmetic
Question
The cost of cultivating a square field at the rate of rupees 250 per hectare is rupees 3650. What is the cost of putting a fence around it at 25 paise per meter?
Choices
Choice (4)  Response  

a.  425.6 rupees 

b.  200 rupees 

c.  382.09 rupees 

d.  320 rupees 

Question number: 67
» Mental Ability » Basic Arithmetic
Question
Human blood RBC’s are expressed in terms of number of red blood cells per cubic mm. Express 8.8 million blood cells per cubic mm terms of scientific notation.
Choices
Choice (4)  Response  

a.  8.8 

b.  88 

c.  0.88 

d.  0.88 

Question number: 68
» Mental Ability » Basic Arithmetic
Question
Which of the following can be the exact multiple of 3?
Choices
Choice (4)  Response  

a.  28 

b.  17 

c.  63 

d.  13 

Question number: 69
» Mental Ability » Basic Arithmetic
Question
Find the value of from the equation
Choices
Choice (4)  Response  

a.  15.5 

b.  12 

c.  13.3 

d.  14 

Question number: 70
» Mental Ability » Basic Arithmetic
Question
A shopkeeper declares a sale of computer books, giving 25 % discount. If the net sale price of a book is rupees 714, what is its market price?
Choices
Choice (4)  Response  

a.  500 Rs 

b.  550 Rs 

c.  952 Rs 

d.  1008 Rs 

Question number: 71
» Mental Ability » Basic Arithmetic
Question
The present ages of three persons in proportions 3: 6: 9. Eight years ago, the sum of their ages was 66. Find their present ages (in years).
Choices
Choice (4)  Response  

a.  16, 28, 26 

b.  8, 20, 28 

c.  15, 30, 45 

d.  None of the above 
