What is the below Rebus indicate?

What word begins and ends with an E, but has only one letter?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

How many times can you subtract the number two from the number fifty?

One night, Louis and Adam were sitting together. Adam was watching a movie while his wife Louis was reading a mystery book. Suddenly the power went out and Adam decided to go to bed, but strangely Louis kept on reading. There was no artificial light around, so Louis kept on reading. How come?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

Can you find out the number that should replace the question mark with a valid reason?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

If eleven plus two equals one, what does nine plus five equal?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?