Quantitative Aptitude - Arithmetic Ability Questions

If cosx.cosy + sinx.siny = -1 then cosx + cosy is

The distance between the points (4, 8) and (k,-4) is 13. What is the value of k?

A can do a work in 24 days and B in 40 days. If they work on it together for 10 days, then what fraction of work is left?

What is the altitude of an equilateral triangle whose side is 12 cm?

In a one day match of 50 overs in an innings the Team A had a run rate of 6.1 runs per over. Team B is playing and 10 overs are left and the required run rate to tie the match is 6.5 per over. What is Team B's score now?

What is the value of 1sin490-θ+1cos290-θ - 1 ?

Find the odd word/letters/number from the given alternatives.

The difference between the compound interest (compounding annually) and simple interest on a sum at the rate of 12% per annum for 2 years is Rs 360. What is the sum (in Rs)?