What is the angle between the two hands of the clock at 8:24 pm?

What least number must be subtracted from 1936 so that the resulting number when divided by 9, 10 and 15 will leave in each case the same remainder 7? 

A car running at 7/11 of its own speed reached a place in 22 hrs. How much time could be saved if the car would run at its own speed?

A boat goes 15 km in an hour in still water, and takes thrice the time to cover the same distance upstream. The speed of the current (in km / hr) is –

If a+b=2c, find $${a\over a-c}+{c\over b-c}?$$

From a point P on a level ground, the angle of elevation of the top tower is 30°. If the tower is 100 meter high, the distance of point P from the foot of the tower is:

Which is the largest 3 digit number that is exactly divisible by 15, 25 and 30?

4⁶¹ + 4⁶² + 4⁶³ + 4⁶⁴ is divisible by: