Puzzle #17: Roman numerals

Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing…

Puzzle #45: order of operations

Can you guess what is the answer?

Puzzle #43: percentage !

In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, “%”, or the abbreviations “pct.”, “pct”; sometimes the abbreviation “pc” is also used. A percentage is a dimensionless number (pure number).

Puzzle #44: logic challange

Give yourself 5 minutes to solve the following problems

Puzzle #18: who is the first to guess the answer?

This is a classic puzzle.

Use puzzle #1 to your advantage

Look carefully at the picture before jumping to a conclusion…

Puzzle #24: can you open your shed?

Your garden looks like the amazon. You desperately need to mow the lawn but the mower is locked…

Puzzle #47: magnetism

You probably need to go back to your science books to resolve this puzzle.

Today it is all about magnets.

What is a magnet?

A magnet is an object (generally a metal) that has a north and south pole, such that…

Puzzle #11: can you guess how many triangle there are?

Puzzle #42: red pill or blue pill?

“You take the blue pill […] You take the red pill.”