IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 574 - 580 of 1042

Access detailed explanations (illustrated with images and videos) to 1042 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

Question 574

Edit

Question

MCQ▾

A cistern has two inlets A and B which can fill it in 10 minutes and 20 minutes respectively. An outlet C can empty the full cistern in 4 minutes. If all the pipes are opened together in the empty tank, time taken to fill the tank completely is ________.

Choices

Choice (4)Response
a.20 minutes
b.10 minutes
c.15 minutes
d.25 minutes

Question 575

Edit

Question

MCQ▾

Number of prime factors in is

Choices

Choice (4)Response
a.60
b.70
c.66
d.73

Question 576

Edit

Question

MCQ▾

A water tank is two-fifth full. Pipe A can fill a tank in 12 minutes and pipe B can empty it in 6 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely?

Choices

Choice (4)Response
a.5 minutes
b.4 minutes
c.5.5 minutes
d.4.8 minutes

Question 577

Edit

Question

MCQ▾

If, then the value of is________.

Choices

Choice (4)Response
a.2
b.3
c.4
d.1

Question 578

Edit

Question

MCQ▾

When simplified, is equal to________

Choices

Choice (4)Response
a.
b.
c.
d.

Question 579

Edit

Question

MCQ▾

Number of prime factors in is

Choices

Choice (4)Response
a.4
b.9
c.6
d.8

Question 580

Edit

Question

MCQ▾

A man completes of a job in 12 days. At this rate how many more days will it take him to finish the job?

Choices

Choice (4)Response
a.23
b.27
c.24
d.26