Mental AbilityBasic Arithmetic (NCO Cyber Olympiad Class 5): Questions 101  105 of 147
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Question number: 101
» Mental Ability » Basic Arithmetic
Question
Mr. Kunal is 36 year old. His son is 8 years old. The ages of Mr. Kunal, his wife and their son add up to 77. Which equation could be used to determine how old Mrs. Kunal is if n = Mrs. Kunal’s age?
Choices
Choice (4)  Response  

a.  77 + 36 + 8=n 

b.  36 + 8+n = 77 

c.  36 + 8=77 + n 

d.  36 + n=77 + 8 

Question number: 102
» Mental Ability » Basic Arithmetic
Question
In ancient Greece, people used letters of their alphabet as numbers. A mark after a letter shown is being used as a number.
Letter  Name  Number 
 Alpha  1 
_{}  Beta  2 
 Gamma  3 
 Delta  4 
 Epsilon  5 
 sigma  6 
 vartheta  7 
 Theta  8 
 MU  9 
According to this table, which of the following statements is true?
Choices
Choice (4)  Response  

a. 


b.  2 

c. 


d.  70 

Question number: 103
» Mental Ability » Basic Arithmetic
Question
If then which of the following is true?
Choices
Choice (4)  Response  

a.  6 2 5 

b.  6 2 9 

c.  8 1 9 

d.  7 3 5 

Question number: 104
» Mental Ability » Basic Arithmetic
Question
= ________.
Choices
Choice (4)  Response  

a.  4256 

b.  425 

c.  4.26 

d.  425.6 

Question number: 105
» Mental Ability » Basic Arithmetic
Question
The picture below shows what happened when different numbers were put in the same number machine
Which could be the rule used in this number machine?
Choices
Choice (4)  Response  

a.  Subtract 9 

b.  Add 5 

c.  Multiply by 3 then add 2 

d.  Multiply by 2 then add 1 
