Exams

One pipe can fill an empty cistern in 4 hours while another can drain the cistern when full in 10 hours. Both the pipes were turned on when the cistern was half-empty. How long will it take for the cistern to be full?

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

The average weight of 25 bags is 55 kg. The weight of one bag was misread as 65 instead of 56. Find the correct mean value.

Article 36 to Article 51 of Indian Constitutional mainly deals with Directive Principles of State Policy, given in ______ of Indian Constitution.

The bar graph shows the number of soldiers in the armies of different countries. Study the diagram and answer the following questions.

What is the ratio of number of soldiers of country B to those of country D?

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Since they were all dressed up,(A)/she assumed they(B)/were going to church together.(C)/No error(D)

Saving is that portion of money income that is .....

In which of the following solution the concentration of H+ ion is the maximum?