Some mathematical problems are not as simple as they seem at first glance Website offers a good stretch your brain and answer the question:.
What is the latest example?
ANSWER: You have got 105? Or, maybe 102?
In fact, the correct answer - 81, and the blame for two small details. Firstly, it is necessary to take into account the number of yellow flowers: in the third example of 2, and the last - 1.
And here is the second nuance is more difficult: the number of petals in purple flower. We do not pay attention to? I see. In the second example of the flower is 5. But it has five petals, each of which is 1. In the last example, the flower petal 4 (4 × 1). This means that (20 × 4) + 1 = 81.
If you do find the right answer - congratulations, you will not take care!