Mental Ability (NCO Cyber Olympiad (SOF) Class 6): Questions 1  8 of 394
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Question number: 1
» Mental Ability » Basic Arithmetic
Question
What is the least common factor (LCM) of 8 and 10?
Choices
Choice (4)  Response  

a.  40 

b.  80 

c.  16 

d.  24 

Question number: 2
» Mental Ability » Basic Arithmetic
Question
What is the least common factor (LCM) of 14 and 21?
Choices
Choice (4)  Response  

a.  42 

b.  21 

c.  70 

d.  45 

Question number: 3
» Mental Ability » Basic Arithmetic
Question
What is the least common factor (LCM) of 45 and 35?
Choices
Choice (4)  Response  

a.  90 

b.  45 

c.  54 

d.  30 

Question number: 4
» Mental Ability » Number Games » Number Series
Question
In the given series find the number in place of? .
23,19, ? , 12,9
Choices
Choice (4)  Response  

a.  15 

b.  16 

c.  14 

d.  17 

Question number: 5
» Mental Ability » Basic Arithmetic
Question
John charged Rs. 15.75 for each birdhouse he built. If the material costs Rs. 10.25 Per house, how much profit could he earn after selling five houses?
Choices
Choice (4)  Response  

a.  Rs. 78.75 

b.  Rs. 27.50 

c.  Rs. 25.50 

d.  Rs. 51.25 

Question number: 6
» Mental Ability » Basic Arithmetic
Question
The number that should replace the triangle so that the following forms a proportion is________.
12,21,8, ∆
Choices
Choice (4)  Response  

a.  18 

b.  16 

c.  14 

d.  20 

Question number: 7
» Mental Ability » Basic Arithmetic
Question
A number is divisible by 5 if, ________.
Choices
Choice (4)  Response  

a.  The last digit is 5 or 0 

b.  The sum of the digits is divisible by 5 

c.  The sum of the digits is divisible by 10 

d.  Question does not provide sufficient data or is vague 

Question number: 8
» Mental Ability » Basic Geometry
Question
Side BC of an ∆ ABC has been produced to point D. If ACD = and A = then B = ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

