This mathematical problem is not as simple as it seems at first glance. She has 2 equally true solutions. As a rule, people quickly solve it in a standard way. But to find the second correct method of solution is obtained only in one out of a thousand. At least, so says the creator of this test for non-standard thinking - the company GoTumble. Check if you can be the only one out of a hundred and ten?
A task
So, you need to find two absolutely correct solutions to this mathematical puzzle. You will see the correct answers under the picture below.
Answer No. 1
At the place of the question mark there should be a number of 40. As a rule, most people solve the problem this way:- Begin with the addition of 1 and 4, resulting in a total of 5;
- Then add 2 and 5, the result 7 is added to the previous sum of the terms - 5, to get 12;
- Then use the same logic: 3 + 6 + 12 = 21;
- Again, the same algorithm: 8 + 11 + 21 = 40.
Answer No. 2
In place of the question mark stands the number 96. This is how to obtain an alternative solution to this puzzle:- 1 + (1 × 4) = 5;
- 2 + (2x5) = 12;
- 3 + (3x6) = 21;
- 8 + (8x11) = 96.