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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. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

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   These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...

4. Dose fractionation - Wikipedia

   en.wikipedia.org/wiki/Dose_fractionation

   The DNA self repair processes in some organisms is exceptionally good; for instance, the bacterium Deinococcus radiodurans can tolerate a 15 000 Gy (1.5 MRad) dose. This is a graph showing the effect of fractionation on the ability of gamma rays to cause cell death. The blue line is for cells which were not given a chance to recover; the red ...

5. Volume fraction - Wikipedia

   en.wikipedia.org/wiki/Volume_fraction

   Volume fraction. In chemistry and fluid mechanics, the volume fraction is defined as the volume of a constituent Vi divided by the volume of all constituents of the mixture V prior to mixing: [1] Being dimensionless, its unit is 1; it is expressed as a number, e.g., 0.18. It is the same concept as volume percent (vol%) except that the latter is ...

6. The best Lighting Deals to shop this Black Friday - AOL

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   Best Black Friday Lightning Deals for kitchen. 22% off the Val Cucina Infrared Heating Air Fryer Toaster Oven. 20% off the LoafNest Incredibly Easy Artisan Bread Kit. 23% off the Coffee Gator ...

7. Conversion (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Conversion_(chemistry)

   Conversion and its related terms yield and selectivity are important terms in chemical reaction engineering.They are described as ratios of how much of a reactant has reacted (X — conversion, normally between zero and one), how much of a desired product was formed (Y — yield, normally also between zero and one) and how much desired product was formed in ratio to the undesired product(s) (S ...

8. Mass fraction (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Mass_fraction_(chemistry)

   Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (in commercial contexts often called percentage by weight, abbreviated wt.% or % w/w; see mass versus weight). It is one way of expressing the composition of a mixture in a dimensionless size ; mole fraction (percentage by moles , mol%) and volume fraction ...

9. Are you dreamscrolling? Three ways to avoid overspending

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   Empower’s new study found that Americans spend 2.5 hours a day, or 873 hours per year, modern-day window shopping and gazing at dream purchases. ... Shoes and accessories (49%), tech gadgets (30 ...