BADs are Basic Arithmetic Dates. The basic BAD is to find an equation using each number in the date only once. All three numbers must be used and the year is a 2-digit year. Note: math functions such as square-root, cube-root, factorial, can be applied to the numbers.

9/7/16 is a "classic" BAD

9 + 7 = 16The following are 9/7/16 BADs found using various math functions.

9 - 7 = sqrt(sqrt(16)) sqrt(9) + sqrt(16) = 7 cuberoot(avg(7, 9)) = sqrt(sqrt(16))One form of BAD is the

badPiEval. AbadPiEvalis when each number of the date is used in an expression that when evaluated approximatesPi(π).Here the square-root and factorial functions are used to create a

badPiEval.(sqrt(9)! + 16) / 7 ~= Pi* badPiEval: 22/7 approximates Pi rounded to nearest hundredth (3.14) π ~= 3.1415926535897932384626Another form of BAD is the

badAgeEval. AbadAgeEvalis when each number of the date is used in an expression that when evaluated equals the age of the person (equationeer) finding thebadAgeEval.9 * 7 - sqrt(16) = 59badAgeEval: MathBabbler was 59 years young on 9/7/16.Another form of BAD is the

badCardinality. AbadCardinalityis when each number of the date is used in an expression that when evaluated equals three (i.e. the number of numbers in a date).9 / sqrt(16 - 7) = 3 sqrt(9)! / (16 % 7) = 3badCardinalityEval: There are three numbers in a date.Another form of BAD is the

bad37Eval. Abad37Evalis when each number of the date is used in an expression that when evaluated equals thirty-seven.9 + 7 * sqrt(16) = 37 sqrt(9) * 7 + 16 = 37 sqrt(9)! + 7 + sqrt(16)! = 37bad37Eval: Whybad37Eval? 37 Heaven @ http://thirty-seven.org]Another form of BAD is the

bad42Eval. Abad42Evalis when each number of the date is used in an expression that when evaluated equals forty-two.sqrt(9) * 7 * sqrt(sqrt(16)) = 42 7! / sqrt(9 + 16)! = 42bad42Eval: 42 is the "Answer to Life, the Universe, and Everything"

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 07 September 2016

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