Magic eye

Imagen magic eye

An unbalanced scale

Given a sack of salt, an unbalanced scale, and two 5-pound weights, measure exactly 10 pounds of salt.

 A book contains X pages, numbered, per usual, from 1 to X, with the total number of digits in those page numbers equal to 1095 (i.e. 1095 individual numbers). That being the case, how many pages are in the book?

Counting Puzzle

If you wrote all of the numbers from 600 to 700 on a piece of paper, how many times would you have written the number 6?

Two men , one dead.

Two men are in a desert. They both have packs on. One of the guys is dead. The guy who is alive has his pack open, the guy who is dead has his pack closed. What is in the pack?

What happened? Historical brainpuzzle

What happened in the middle of the twentieth century that will not happen again for 4,000 years?

Series and numbers

Which will be last number of series?
18, 46, 94, 63, 52, ?

We want to cut a 3-inch cube into 27 1-inch cubes. We can do this by making six cuts, as shown. Can we accomplish the task with fewer cuts by rearranging the pieces between cuts?

Following the serie

What are the next two letters in the following series and why?

W A T N T L I T F S _ _

Against the law

Why is it against the law for a man living in Madrid to be buried in Barcelona?

clock puzzle

Over a 24 hour period, how many times will the minute and hour hand on the 24hr clock form a right angle?