Quantitative Aptitude - Arithmetic Ability Questions

P and Q together can make a door in 12 days. They started the work together but after 8 days P left the work. The remaining work is completed by Q alone in 7 more days. In how many days can P alone complete the entire work?

What is the value of ( 1/3 + cosec30)?

What is the value of (cos 45 - 1/3) ?

A scored 72% in a paper with a maximum marks of 900 and 80% in another paper with a maximum marks of 700. If the result is based on the combined percentage of two papers, the combined percentage is

The mean of distribution is 11 and the standard deviation is 5. What is the value of the coefficient variation?

The mean of the data 2, 9, 9, 3, 6, 9, 4 is

Select the odd word/letters/number/number pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.