Even numbers are expressed in the form 2k, where k is an integer. Odd numbers are usually written in the form 2k+1, where k is also an integer. Integers may be positive or negative. By the way, 0 (zero) is also considered to be an integer.
2006-12-12 20:42:29
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answer #3
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answered by MathBioMajor 7
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1,2,3,4,5 integers
2,4,6,8,10 even numbers
1,3,5,7,9 odd numbers
1,2,3,5,7,11,13,17 prime numbers
3,6,9,12,15 multiples of three
1,4,9,16,25,36 perfect squares
1,1,2,3,5,8,13,21 Fibonacci series (each number is the sum of the two previous)
2006-12-12 20:16:20
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answer #4
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answered by Steve A 7
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