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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 ...
A hand in a higher-ranking category always ranks higher than a hand in a lower-ranking category. A hand is ranked within its category using the ranks of its cards. Individual cards are ranked, from highest to lowest: A, K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3 and 2. [ 5] However, aces have the lowest rank under ace-to-five low or ace-to-six low rules ...
The tested SWH system had about 20% of the impact of an electrical water heater and half that of a gas water heater. [ 50 ] Analysing their lower impact retrofit freeze-tolerant solar water heating system, Allen et al. (qv) reported a production CO 2 impact of 337 kg, which is around half the environmental impact reported in the Ardente et al ...
Champion Sweatshirt (unisex) $25 $50 Save $25. Because one can never have too many sweatshirts. This one comes in sizes XS to 4X and is available in a selection of styles and colors. $25 at Amazon ...
Water scarcity is also caused by production of water intensive products. For example, cotton: 1 kg of cotton—equivalent of a pair of jeans—requires 10.9 cubic meters (380 cu ft) water to produce. While cotton accounts for 2.4% of world water use, the water is consumed in regions that are already at a risk of water shortage.
Ninja Creami Ice Cream Maker. $149 $199 Save $50. With seven magical frozen treat modes, and two-pint containers and lids, this appliance was already a good deal at full price, especially compared ...
Nike Air Force 1 '07 Sneaker. $81 $115 Save $34. Because no spring outfit is complete without a stylish pair of white sneakers. These Nike Air Force 1s feature a cute gingham print that makes them ...
In a typical preparation, 255 mL of a solution with 118 g/L HClO is slowly added with stirring to a solution of 40 g of NaOH in water 0 °C. Some sodium chloride precipitates and is removed by filtration. The solution is vacuum evaporated at 40–50 °C and 1–2 mmHg until the dihydrate crystallizes out. The crystals are vacuum-dried to ...