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2. Rule of product - Wikipedia

   en.wikipedia.org/wiki/Rule_of_product

   In combinatorics, the rule of product or multiplication principle is a basic counting principle (a.k.a. the fundamental principle of counting). Stated simply, it is the intuitive idea that if there are a ways of doing something and b ways of doing another thing, then there are a · b ways of performing both actions.

3. Combinatorial principles - Wikipedia

   en.wikipedia.org/wiki/Combinatorial_principles

   The rule of sum is an intuitive principle stating that if there are a possible outcomes for an event (or ways to do something) and b possible outcomes for another event (or ways to do another thing), and the two events cannot both occur (or the two things can't both be done), then there are a + b total possible outcomes for the events (or total possible ways to do one of the things).

4. Bayes' theorem - Wikipedia

   en.wikipedia.org/wiki/Bayes'_theorem

   Often, for some partition {A j} of the sample space, the event space is given in terms of P(A j) and P(B | A j). It is then useful to compute P(B) using the law of total probability: = (), Or (using the multiplication rule for conditional probability), [23]

5. Distributive property - Wikipedia

   en.wikipedia.org/wiki/Distributive_property

   When multiplication is mentioned in elementary mathematics, it usually refers to this kind of multiplication. From the point of view of algebra, the real numbers form a field, which ensures the validity of the distributive law. First example (mental and written multiplication)

6. Cross-multiplication - Wikipedia

   en.wikipedia.org/wiki/Cross-multiplication

   The rule of three [1] was a historical shorthand version for a particular form of cross-multiplication that could be taught to students by rote. It was considered the height of Colonial maths education [2] and still figures in the French national curriculum for secondary education, [3] and in the primary education curriculum of Spain. [4]

7. 26-year-old California man mauled by his 3 dogs; animals ...

   www.aol.com/news/26-old-california-man-mauled...

   A California man died and a Good Samaritan is facing serious injuries after being attacked by dogs last week. According to a statement from the San Diego Humane Society obtained by USA TODAY, the ...

8. To cut down on drinking, try the 1-2-3 rule - AOL

   www.aol.com/cut-down-drinking-try-1-100002024.html

   The 1-2-3 drinking rule helps prevent alcohol abuse. The limits are no more than one drink per hour, two drinks per occasion and three drinks per day. To cut down on drinking, try the 1-2-3 rule

9. Triple product rule - Wikipedia

   en.wikipedia.org/wiki/Triple_product_rule

   Suppose a function f(x, y, z) = 0, where x, y, and z are functions of each other. Write the total differentials of the variables = + = + Substitute dy into dx = [() + ()] + By using the chain rule one can show the coefficient of dx on the right hand side is equal to one, thus the coefficient of dz must be zero () + = Subtracting the second term and multiplying by its inverse gives the triple ...