Quantitative Aptitude - Arithmetic Ability Questions

If x -­ y = 7 and xy = 32, then value of (x2 + y2) is

In the following question, select the odd number from the given alternatives.

What is the value of 34+122 ?

The ratio of speeds of X and Y is 5:7. Y covers a distance of 420 km in 3 hours. What is the speed of X?

A can do a work in 15 days and B in 20 days. If they work on it together for 5 days, then what fraction of work is left?

Two taps P and Q can fill a tank in 24 hours and 18 hours respectively. If the two taps are opened at 11 a.m., then at what time (in p.m.) should the tap P be closed to completely fill the tank at exactly 2 a.m.?

If medians of a triangle have lengths 18 cm, 24 cm and 30 cm, then what is the area (in sq.cm) of the triangle?

If x = 2+32-3, then what is the value of x2+x-9 ?