At what approximate time between 4 and 5 am will the hands of a clock be at right angle ?

What is the measure of the angle formed by the hour and minute hand when the time to 10' O clock? 

At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together?

If the two hands in a clock are 3 minutes divisions apart, then the angle between is

At the angle the hands of a clock are inclined at 15 minutes past 5?

Find the angle between the hour hand and the minute hand of a clock when the time is 3.25 

One watch which gains uniformly is one minute slow at 1 pm on Tuesday and it is two minutes fast at 1 am on the following Friday. When had it shown the correct time?

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