Vanderlei Cordeiro and the Marathon Difficulty Level: In a marathon, Brazilian Vanderlei Cordeiro de Lima had already completed 2/5 of the race's full course, when a former Irish priest stormed the track and held the athlete. Vanderlei, who was 40km from halfway, was saved by the Greek citizen Polyvios Kossivas and continued in the race, winning the bronze medal.

In computing, when we refer to the size of a file or the storage capacity of some device, such as a thumb drive or the hard disk of a computer, we hear the terms byte, kilobyte, megabyte, gigabyte, among others less known. Each of these storage units is represented by a symbol: Byte - B Kilobyte - kB Megabyte - MB Gigabytes - GB In order to understand what each storage represents, you must first know what a bit is, which is the smallest unit. information that may be stored or transmitted.

Goblins in the Chimney After going down the same chimney, each of the goblins thought he was the same. When the one with the clean face looked at the one with the dirty face, he decided to wash himself. The one with the dirty face, looking at the one with the clear face, thought it was not necessary. Back to statement Challenge 144 The five apples Challenge index Next >> Challenge 146 The five sailors

6 number betting In Mega-Sena six distinct numbers are drawn from 1 to 60. Since no matter the order in which these numbers are drawn, the total amount of possible outcomes is calculated by a combination of 60 elements taken 6 See below how this step-by-step calculation is done, which can be done instantly with our mathematical simulator.

The bottle and the cork Difficulty level: A bottle with its cork costs $ 1.10. Knowing that the bottle costs $ 1.00 more than the cork, what is the price of the cork? And what is the price of the bottle? Challenge 66 The dog and the hare Challenge index Next >> Challenge 68 Sum of the digits

Two complex numbers are equal when their real and imaginary parts are respectively equal. Example Determine x and y, so that: (2x + y) + 6i = 5 + (x + 4y) i. Resolution Next: Conjugate a Complex Number