Mental AbilityBasic Arithmetic (NCO Cyber Olympiad (SOF) Class 6): Questions 74  81 of 268
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Question number: 74
» Mental Ability » Basic Arithmetic
Question
The LCM of two numbers is 504. Which of the following numbers cannot be possibly the HCF of these numbers?
Choices
Choice (4)  Response  

a.  18 

b.  42 

c.  16 

d.  36 

Question number: 75
» Mental Ability » Basic Arithmetic
Question
The product of two numbers is 4000. If the H. C. F. of the numbers is 20, then L. C. M. will be ________.
Choices
Choice (4)  Response  

a.  20 

b.  200 

c.  10 

d.  40 

Question number: 76
» Mental Ability » Basic Arithmetic
Question
The number that should replace the triangle so that the following forms a proportion is________.
16, 24, 26, ∆
Choices
Choice (4)  Response  

a.  39 

b.  37 

c.  36 

d.  40 

Question number: 77
» Mental Ability » Basic Arithmetic
Question
L. C. M. of 52 and 104 is ________.Choices
Choice (4)  Response  

a.  52 

b.  78 

c.  104 

d.  39 

Question number: 78
» Mental Ability » Basic Arithmetic
Question
Saint Mary’s School’s students are going on a trip. Group 1 will have 23 passengers on the bus, while Group 2 will have 19 passengers and Group 3 will have 21 passengers on the bus. How many passengers will be on the bus from Saint Mary’s School?
Choices
Choice (4)  Response  

a.  135 

b.  72 

c.  89 

d.  63 

Question number: 79
» Mental Ability » Basic Arithmetic
Question
Choices
Choice (4)  Response  

a.  1 

b.  cannot be determined 

c.  0 

d.  1 

Question number: 80
» Mental Ability » Basic Arithmetic
Question
If the selling price of 5 books is same as the cost price of 6 books then gain percent is……….
Choices
Choice (4)  Response  

a.  19% 

b.  20% 

c.  15% 

d.  5% 

Question number: 81
» Mental Ability » Basic Arithmetic
Question
Which set of data given below not show a constant rate of change?
Choices
Choice (4)  Response  

a. 

 
b. 

 
c. 

 
d. 

