Mental Ability (NCO Cyber Olympiad Class 7): Questions 142  148 of 205
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 416 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
Question number: 142
» Mental Ability » Basic Arithmetic
Question
If 12 men working 5 hours a day can do a piece of work in 5 days; in how days will 10 men working for 3 hours a day to do the same piece of work?
Choices
Choice (4)  Response  

a.  11.66 days 

b.  30 days 

c.  10 days 

d.  55 days 

Question number: 143
» Mental Ability » Basic Arithmetic
Question
If , find the value of x.
Choices
Choice (4)  Response  

a.  62 

b.  68 

c.  58 

d.  26 

Question number: 144
» Mental Ability » Basic Arithmetic
Question
Human blood RBC’s are expressed in terms of number of red blood cells per cubic mm. Express 5.5 million blood cells per cubic mm terms of scientific notation.
Choices
Choice (4)  Response  

a.  55 

b.  5.5 

c.  5.5 

d.  0.55 

Question number: 145
» Mental Ability » Basic Arithmetic
Question
A train 500 meters long is running at a speed of 48 . If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is.
Choices
Choice (4)  Response  

a.  130 

b.  500 

c.  300 

d.  100 

Question number: 146
» Mental Ability » Basic Arithmetic
Question
Find the value of from the equation
Choices
Choice (4)  Response  

a.  62 

b.  35 

c.  45 

d.  33 

Question number: 147
» Mental Ability » Basic Arithmetic
Question
A man sold a radio for 1220 and gained 20%, then the radio was bought for?
Choices
Choice (4)  Response  

a.  1016.66 

b.  1200 

c.  980 

d.  1790 

Question number: 148
» Mental Ability » Basic Arithmetic
Question
Two cubes have volumes in the ratio 1: 125. Then the ratio of their sides is
Choices
Choice (4)  Response  

a.  1: 18 

b.  1: 2 

c.  1: 5 

d.  1: 8 
