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In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more than t boxes need to be bought ...
0.44704. Miles per hour ( mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom, the United States, and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.
This amounts to around 13.1 litres (3.46 US gallons, 2.88 Imperial gallons). Power Donkey power. This facetious engineering unit is defined as 250 watts – about a third of a horsepower. Pirate-ninja. A pirate-ninja is defined as one kilowatt-hour (3.6 MJ) per Martian day, or sol. It is equivalent to approximately 40.55 watts.
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Of a total 46,055 square miles (119,282 km 2), 44,817 square miles (116,075 km 2) are land, 490 square miles (1,269 km 2) are inland waters, and 749 square miles (1,940 km 2) are waters in Lake Erie. It is the 33rd-largest state in the United States.
The original Naismith 's rule from 1892 says that one should allow one hour per three miles on the map and an additional hour per 2000 feet of ascent. [1] [4] It is included in the last sentence of his report from a trip. [1] [8] Today it is formulated in many ways. Naismith's 1 h / 3 mi + 1 h / 2000 ft can be replaced by:
Notes: All estimated fuel economy based on 15,000 miles (24,000 km) annual driving, 45% highway and 55% city (1) Conversion 1 gallon of gasoline=33.7 kW·h. (2) The 2014 i3 REx is classified by EPA as a series plug-in hybrid, while for CARB is a range-extended battery-electric vehicle (BEVx). The i3 REx is the most fuel economic EPA-certified ...
Low-income countries now have the highest annual road traffic fatality rates, at 24.1 per 100,000, while the rate in high-income countries is lowest, at 9.2 per 100,000. [3] Seventy-four percent of road traffic deaths occur in middle-income countries, which account for only 53 percent of the world's registered vehicles.