Between 4 o'clock and 5 o'clock the hands of a clock make an angle of 90° twice, what is the interval between these two times?

In a watch, the minute hand crosses the hour hand for the sixth time exactly after every 6 hrs 36 min 30 sec of watch time. What is the time gained or lost by this watch in one day?

A clock that moves uniformly is 6 minutes slow at 8 am on Sunday and 6 minutes 48 seconds fast at 8 pm on the following Sunday. When was it right?

A clock is set right at 5 AM. The clock loses 16 minutes in 24 hours. What will be the true time when the clock indicates 10 pm on 4th day?

How much does a clock gain/lose per day, if its hands meet every 64 minutes?

The reflex angle between the hands of a clock at 10.25 is:

A clock that gains 5 seconds in 3 minutes is correct at 7 in the morning. On the same day in the afternoon, when the clock strikes a quarter past four, the exact time is:

There are two clocks, both set to show at 10 pm on 21st January 2010. One clock gains 2 minutes in an hour and the other clock loses 5 minutes in an hour. Then by how many minutes do the two clocks differ at 4 pm on 22nd January 2010?

A wall clock gains 2 minutes every 12 hours, while a table clock loses 2 minutes every 36 hours. Both the watches are matched at 12 noon on Tuesday. When will the next time both show the same time?

In 25 min, the minute hand gains, over the hour hand by:

A clock gains 15 min per day. It is set right at 12 noon. What time will it show at 4 am the next day?

If a clock strikes 12 in 33 seconds, it will strike 6 in how many seconds?

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

At what time between 5.30 and 6 will the hands of a clock be at right angles?