Rectify the following equality 101 - 102 = 1 by moving just one digit.

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

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?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Can you find the hidden animal in the picture below?

How many letters are in the alphabet?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?