Only the best mathematicians can solve this problem without a calculator.

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Do you think you are good at mental arithmetic? It is a challenge that will put your skills to the test! A mathematical puzzle that seems simple, but requires concentration and a perfect mastery of the rules of arithmetic.

This challenge, shared by  Dr. Saba Osmaan  on X (formerly Twitter), has attracted the attention of thousands of internet users.  Can you find the solution in 10 seconds, without making a mistake?

Why are these puzzles so popular?

Math challenges are not only fun; they are also  good for the brain.  By solving them, you increase your logic, focus, and analysis speed.

With these exercises you can:

  • Strengthen your memory  by practicing your ability to remember and apply mathematical rules.
  • Improves concentration  because it allows you to focus on a specific task under time pressure.
  • Avoid common mistakes that are useful in daily and professional life.

The austere comparison

This is the challenge that has sown doubt among many internet users:

2 × 1 + 6 × 6

You have  10 seconds  to find the answer, without a calculator.

Please note that it is crucial to respect the rules regarding the priority of operations:

  1. Do the multiplications first.
  2. Then make the addition.

Ready? Let’s get started!

The most common mistakes

Many people fall into the trap of  premature  billing, which distorts the final result. Here are the most common mistakes:

  • Ignore the order of operations (PEMDAS/BODMAS rule).  A few additions before multiplication, which gives an incorrect answer.
  • Rushing under time pressure , leading to incorrect calculations.

The solution explained step by step

To avoid confusion, here is how to solve the equation correctly:

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