Replace the question mark with the correct number.

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.

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

what's the probability of getting a king or a queen from a pack of 52 cards?

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

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Count the number of triangles in the given picture.

Why is Saturday stronger than Monday?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).