Solution:

If nobody goes there, then that restaurant can't be crowded.

Solution:

It can be possible if she was living in B.C. not A.D.

Solution:

The glass pane only allows the fruits with double letters in their name like in cherries and apples.

Solution:

1 Hour.

Suppose he takes the first tablet at 12:00 pm. Then the second will be consumed by him at 12:15, third at 12:30, fourth at 12:45 and fifth at 1:00.

Solution:

It is simple. You kill the two animals with two bullets i.e. tiger and leopard and then make a run in the Jaguar (a car brand).

Solution:

If you look at the answer figure, you will see four 1x1 squares and one 4x4 square. Nobody asked you to make five 1x1 squares. Most of the people get stuck at that.

Solution:

The deaf beggar as the sister of the person who died.

Solution:

Well, this is possible. They were playing as a team in doubles match against other team.

Solution:

AMAN

Explanation:
The numbers actually corresponds to the months of the year.

4 - April
5 - May
8 - August
11 - November

Now when you combine the initials of these months, you will get the killer's name i.e. AMAN

Solution:

No one can take out any money from the taxi meter because it simply does not contain any money. It just has a timer installed that is used to decide the fare as per the distance covered.