 | 1826 - 490 σελίδες
...The sum, or difference, of any two even numbers, is an even number. 2. The sum, or difference, of any two odd numbers, is even ; but the sum of three odd numbers, is odd. 3. The sum of any even number of odd numbers is even ; but the sum of any odd number of odd numbers... | |
 | Perry Fairfax Nursey - 1826 - 476 σελίδες
...The sum, or difference, of any two even numbers, is an even number. 2. The sum, or difference, of any two odd numbers, is even ; but the sum of three odd numbers, is odd. 3. The sum of any even number of odd numbers is even ; but the sum of any odd number of odd numbers... | |
 | 1826 - 478 σελίδες
...The sum, or difference, of any two even numbers, is an even number. 2. The sum, or difference, of any two odd numbers, is even ; but the sum of three odd numbers, is odd. 3. The sum of any even number of odd numbers is even ; but the sum of any odd number of odd numbers... | |
 | Frederick Emerson - 1834 - 300 σελίδες
...the cube. Property 1. The sum, or the difference of any two even numbers, is an even number. Prop. 2. The sum, or difference, of two odd numbers is even; but the sum of three odd numbers is odd. Prop. 3. The sum of an even number of odd numbers is even; but the sum of an odd number of odd numbers... | |
 | James Bryce - 1837 - 322 σελίδες
...of the two first is even, then the sum of this sum and the third is even, and so on to the last. II. The sum or difference of two odd numbers is even;...numbers is odd. For all odd numbers are of the form 2яз±; 1 (Art. 48), therefore the sum or difference of two odd numbers is represented by (2nzfc 1... | |
 | Frederick Emerson - 1839 - 300 σελίδες
...the cube. Property 1. The sum, or the difference of any two even numbers, is an even number. Prop. 2. The sum, or difference, of two odd numbers is even ; but the sum of three odd numbers is odd. Prop. 3. The sum of an even number of odd numbers is even; but the sum of an odd number of odd numbers... | |
 | James Bates Thomson - 1846 - 354 σελίδες
...more even numbers, is an even number. 2. The difference of any two even numbers is an even number. 3. The sum or difference of two odd numbers, is even ; but the sum of three odd numbers, is odd. 4. The sum of any even number of odd numbers is even ; but the sum of any odd number of odd numbers... | |
 | James Bates Thomson - 1846 - 362 σελίδες
...more even numbers, is an even number. 2. The difference of any two even numbers, is an even number. 3. The sum or difference of two odd numbers, is even ; but the sum of three odd numbers, is odd. 4. The sum of any even number of odd numbers, is even ; but the sum of any odd number of odd numberss... | |
 | James Bates Thomson - 1846 - 402 σελίδες
...more even numbers, is an even number. 2. The difference of any two even numbers is an even number. 3. The sum or difference of two odd numbers, is even; but the- sum of three odd numbers, is odd. 4. The sum of any even number of odd numbers is even ; but the sum of any odd number of odd numbers... | |
 | Charles William Hackley - 1846 - 542 σελίδες
...A=2ra and B=2n' be any two even numbers ; then which, being of the form 2n, is an even number. II. The sum or difference of two odd numbers is even, but the sum of three odd numbers is odd. Let A=2»+l, B=2n'+l, and C=2ra"+l, be three odd numbers; then A+B=2n+2n'+2=2B", and A+B + C=2n+2n'+2n"-... | |
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The sum or difference of two odd numbers, is even ; but the sum of three odd numbers, is odd. 4. The sum of any even number of odd numbers, is even ; but the sum of any odd number of odd numbers, is odd. 5. The sum, or difference, of an even and an odd... 
