Solution:

Breakfast

Solution:

10 o'clock + 4 hours = 2 o'clock.

Solution:

Crossroads

Solution:

Light both the ends of the first string and one end of the second string. 30 minutes will have passed when the first string is fully burned, which means 30 minutes have burned off the second string. Light the end of the second string and when it is fully burned, 45 minutes will have passed.

Solution:

What goes up must come down.

Solution:

three positive numbers are 1 2 & 3

1 x 2 x 3 = 6
1 + 2 + 3 = 6

Solution:

The missing number that fit in ? is 6.

The number in the middle of each triple is the same as the digits of either end's number when added together. 3+7=10=8+2 and so on.

Solution:

The spirit lies behind Door 4.


If the spirit is behind Door 1, then both 2 and 3 are true.

If the spirit is behind Door 2, then both 1 and 4 are true.

If the spirit is behind Door 3, then 1, 3, and 4 are all true.

If the spirit is behind Door 4, then the statements on all the doors are false, except for that on Door 2. This matches the rules, and therefore, the resort hotel spirit lurks behind Door 4.

Solution:

I have written 'your exact weight' on the paper.

Solution:

143547