Difficulty: Medium

An eighty-year-old person was living alone in his house. On a sunny Friday morning, while delivering some letters in the mailbox, the postman felt suspicious and decided to look through the window of the house. That’s when he saw the old man lying dead on the floor in a puddle of blood. When the police arrived, they found three bottles of milk, the Tuesday’s newspaper, and some gifts in front of the house. The lock of the door was broken, and they already suspected a person. Whom and why?

The police suspected the newspaper boy. Since there were 3 bottles of milk, the old man must have been dead for a few days already. However, the last newspaper left in front of his house is from Tuesday. Probably the newspaper boy, knowing that the old man is dead, decided that there is no point to go to his door and deliver newspapers anymore.

Puzzil Primus was born on the 314th day of year 20B.C. and died on the 271st day of year 20A.D. How old was he when he died?

Puzzil Primus was 38 years old. This is because day 314 comes after day 271, and also there is no year 0 in the calendar.

A sundial has the fewest moving parts of any timepiece. Which has the most?

The hourglass, it has thousands of grains of sand.

What four-letter word can be written forward, backward or upside down, and can still be read from left to right?

The word NOON.

Imagine you have three identical bricks and want to find the common length of their main diagonals. What is the easiest way to do this using just a measuring tape?

PLace the bricks as shown on the image below, then measure the marked segment.