В ящике имеется 13 деталей, среди которых 8 окрашенных. Сборщик наудачу извлекает 4 детали. Найти вероятность того, что все извлеченные детали окажутся окрашенными.

Artificial Japanese island of futuristic Tokyo Bay is one of the tallest Ferris wheels in the world. Its height is 115 meters. The wheel makes a full rotation in just 16 minutes. From the highest point visible Tokyo Bay and almost the entire island.Until 2000, this Ferris wheel was considered the highest in the world, and then built the London Eye (Ferris wheel, whose height was 135 meters). But the wheels on Odaiba remained the title of the largest in Asia.Feature wheels on Odaiba - in podogrevayushchie seats, which makes riding comfortable in any season. Particularly impressive is its appearance in the evening - wheel, coloured neon lights. The Ferris wheel is located in an amusement Park Pallet town at its foot is one of the world's largest concert venues.