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2. Coupon collector's problem - Wikipedia

   en.wikipedia.org/wiki/Coupon_collector's_problem

   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 ...

3. Residential water use in the U.S. and Canada - Wikipedia

   en.wikipedia.org/wiki/Residential_water_use_in...

   Each load uses on average 29.3 gallons (111 liters) of water. According to EPA, a full-sized Energy Star certified clothes washer (with "water factor" - WF ≤ 8.0 gal/cycle/ft^3) should use on average 15 gallons (57 liters) of water per load, compared to at least two times that volume used by a standard machine. [14]

4. Water efficiency - Wikipedia

   en.wikipedia.org/wiki/Water_efficiency

   Water efficiency is the practice of reducing water consumption by measuring the amount of water required for a particular purpose and is proportionate to the amount of essential water used. [1] [2] Water efficiency differs from water conservation in that it focuses on reducing waste, not restricting use. [3] Solutions for water efficiency not ...

5. Prime Day deals under $50 — 50+ items to shop right now - AOL

   www.aol.com/lifestyle/prime-day-deals-under-50...

   Updated July 16, 2024 at 6:09 AM. Prime Day deals under $50 — 50+ items to shop right now. If you weren't aware, there are loads of deals unveiling across the internet this week. That's because ...

6. These 7 flattering dresses are 50% off at Old Navy — but not ...

   www.aol.com/lifestyle/these-7-flattering-dresses...

   Tiered Maxi Swing Dress. $18 $35. See at Old Navy. Cold Shoulder Maxi Swing Dress. $27 $55. See at Old Navy. See 2 more. There are tons of deals for the whole family, like 50% off activewear for ...

7. Inch of water - Wikipedia

   en.wikipedia.org/wiki/Inch_of_water

   It is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions. At a temperature of 4 °C (39.2 °F) pure water has its highest density (1000 kg/m 3). At that temperature and assuming the standard acceleration of gravity, 1 inAq is approximately 249.082 pascals (0.0361263 psi).