Can you find the thief by just looking at the picture below?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

Decode below rebus
D
N
A
T
S , D

How do you go from 98 to 720 using just one letter?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Can you solve the rebus below?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Rearrange the letters in "new door" to make one word.

Why do you find that most of the buildings are deprived of the 13th floor?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT