数量关系之数字特性法（Numerical characteristic method of quantitative relation）.doc

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数量关系之数字特性法（Numerical characteristic method of quantitative relation）.doc

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数量关系之数字特性法（Numerical characteristic method of quantitative relation）

数量关系之数字特性法（Numerical characteristic method of quantitative relation） The digital characteristic method is not directly to get the final result, but only need to consider a final results of the digital characteristics, thus eliminate the wrong option. The key to grasp the digital characteristic method, is to master some basic digital characteristics. (the following rules only natural numbers in the discussion) (a) parity operation rule [basic] + = even odd odd; Even even = even; Even odd = odd; Odd even odd =. []. 1. and if any two number is odd, then the difference is odd; and even if so, the difference is even. 2. arbitrary number two and number two is poor or odd parity and difference is the opposite; or even, the parity is the same. (two) to determine the basic rule of divisibility 1. can be 2, 4, 8 digital characteristics, 5, 25, 125 divisible by the number of Can be 2 (or 5) divisible by the number, at the end of a number can be divisible by 2 (or 5); Can be 4 (or 25) divisible by the number, at the end of two digits can be divisible by 4 (or 25); Can be 8 (or 125) divisible by the number, at the end of three digits can be divisible by 8 (or 125); A number is 2 (or 5) in addition to the remainder of the end is a number is 2 (or 5) in addition to the remainder; A number is 4 (or 25) in addition to the remainder of the end is two digits is 4 (or 25) in addition to the remainder; A number is 8 (or 125) in addition to the remainder of the end is three digits is 8 (or 125) in addition to the remainder. 2. can be divisible by 9, 3 digital characteristic number Can be 3 (or 9) divisible by the number of digits, and by 3 (or 9). A number is 3 (or 9) in addition to the remainder of its members is added by 3 (or 9) in addition to the remainder. 3. can be divisible by the number of 11 digital characteristics Number is divisible by 11, odd and even position and the difference can be divisible by 11. (three) to determine the core characteristics of multiple relationship If