NCO Cyber Olympiad (SOF) Class 8: Questions 231  237 of 510
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Question number: 231
» Mental Ability » Basic Arithmetic
Question
There are 400 students in the tenth grade. The ratio of girls to boys is 3: 5. What percent of the students are girls?
Choices
Choice (4)  Response  

a.  150% 

b.  50% 

c. 


d. 


Question number: 232
» Verbal Reasoning » Series Completion
Question
What is the next number in this sequence?
18,54,162,486, ?
Choices
Choice (4)  Response  

a.  1,456 

b.  1,458 

c.  1,278 

d.  2,828 

Question number: 233
» Mental Ability » Basic Geometry
Question
The surface area of a cube is . Its volume is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 234
» Mental Ability » Basic Geometry
Question
The volume of a cube is . Its surface area is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 235
» Mental Ability » Basic Algebra
Question
What is the value of , when ?
Choices
Choice (4)  Response  

a.  6 

b.  9 

c.  12 

d.  3 

Question number: 236
» Mental Ability » Basic Arithmetic
Question
If the cost price of 12 articles be equal to the selling price of 15 articles, the loss percent is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 237
» Mental Ability » Basic Geometry
Question
The given figure shows a square inscribed in a larger square. What is the area of the smaller square?
Choices
Choice (4)  Response  

a.  576square units 

b.  49square units 

c.  961square units 

d.  625square units 
