Quantitative Aptitude - Arithmetic Ability Questions

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

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?

tanAcosec2A is equal to

In ΔDEF measure of angle E is 90 deg. If sinD = 15/17, and DE = 4cm, then what is the length (in cm) of side EF?

The ratio of the number of marbles that Joyee and Minati had was 5 : 8 while the ratio of the number of marbles that Jacob and Minati had was 7 : 12. What is the ratio of the number of marbles that Joyee and Jacob had?

Select the odd word from the given alternatives.

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

If 25% of an electricity bill is deducted, Rs 1788 is still to be paid. How much was the bill?