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2. Digit-reassembly number - Wikipedia

   en.wikipedia.org/wiki/Digit-reassembly_number

   If these potential digit-sums are used in the formula 2 x digit-sum x 11, the digit-sum of the result will determine whether or not the result is an Osiris number. 1. 2 x 6 x 11 = 132. 2. Digit-sum (132) = 1 + 2 + 3 = 6. 3. Therefore 132 is an Osiris number. 1. 2 x 7 x 11 = 154. 2. Digit-sum (154) = 1 + 5 + 4 = 10. 3. Therefore 154 is not an ...

3. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   The sum of two numbers is unique; there is only one correct answer for a sums. [8] When the sum of a pair of digits results in a two-digit number, the "tens" digit is referred to as the "carry digit". [9] In elementary arithmetic, students typically learn to add whole numbers and may also learn about topics such as negative numbers and fractions.

4. Addition - Wikipedia

   en.wikipedia.org/wiki/Addition

   3 + 2 = 5 with apples, a popular choice in textbooks [1] Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. [2] The addition of two whole numbers results in the total amount or sum of those values combined. The example in the ...

5. Digit sum - Wikipedia

   en.wikipedia.org/wiki/Digit_sum

   Digit sums and digital roots can be used for quick divisibility tests: a natural number is divisible by 3 or 9 if and only if its digit sum (or digital root) is divisible by 3 or 9, respectively. For divisibility by 9, this test is called the rule of nines and is the basis of the casting out nines technique for checking calculations.

6. Arithmetic - Wikipedia

   en.wikipedia.org/wiki/Arithmetic

   If this number is truncated to 4 decimal places, the result is 3.141. Rounding is a similar process in which the last preserved digit is increased by one if the next digit is 5 or greater but remains the same if the next digit is less than 5, so that the rounded number is the best approximation of a given precision for the original number.

7. Types of PTSD: From Symptoms to Treatment - AOL

   www.aol.com/types-ptsd-symptoms-treatment...

   Research has shown that women are two to three times as likely as men to develop it. Hormones . A study on people who had heart attacks found that those with lower cortisol levels were more likely ...