Can anybody define what makes a number even or odd?
955173
First you can only define even and odd for integers, so it only applies to {... -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5...}\n\nAn integer is even if you divide it by 2 and have *no* remainder.  \nAn integer is odd if you divide it by 2 and have a remainder.\n\nThe set of even numbers:\n{... -6, -4, -2, 0, 2, 4, 6 ...}\n\nThe set of odd numbers:\n{... -5, -3, -1, 1, 3, 5, 7 ...}\n\nAn alternate definition is if the last digit of a number is 0, 2, 4, 6, 8 the number is even.\nIf the last digit of a number is 1, 3, 5, 7, 9, the number is odd.
787052
1, 1, 9, 9, 25\nFor an odd n, the nth term is n^2.\nFor an even n, the nth term is (n-1)^2.
603103
The median is another word for the number that is the middle number. When there is an odd amount of numbers, the one in the middle is the median. When there isn't, you take the mean (average) of the two in the middle. With this set of numbers, since there is 11, the median is 9.\n\nHope that helps!
312174
It seems undefined since for x <= 0 and x != odd number, x^x doesn't work out so well.  If it's x->0+, then it's just 1.
94104
u can do it by trial and error. ok the possible digits for ones are just 1,3,5,7,9 since the statement says it is an odd number. ok then try to add 2 and equate it to 12. if it is = that's is the answer. 7+5= 12. so and 7 is greater than 5 by 2. the answer is 75 degrees.
324897
Could be 10,14,13. The odd terms differ by 3 (eg. 4-1,7-4), the even terms differ by 4.
200952
Write the number in binary.  Now, from right to left, write the digit for the even powers of 2.  Then write the digits for the odd powers of 2.\n\nNow, in decimal, subtract these 2 numbers, and if this number is divisible by 3, then the binary number is divisible by 3.\n\nExamples\n\n24 = 11000\ne - 001 -- starting w/the first on the right, and every other one.\no - 01 -- starting w/the second from the right, and every other one.\n\nNow in decimal, 1-1 = 0, so 11000 is divisible by 3\n\n~*~*~*~*~*~*~*~\n45 = 101101\ne - 110\no - 011; in decimal, 110 - 11 = 99, which is divisible by 3, so 101101 is divisible by 3\n\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\nTo Milkyway:  Thanks!  I'm thinking it's probably got something to do with the fact that 3 written in binary is 11 ;)
996120
They are obviously countable.  Remember that the set of perfect numbers is a subset of the set of integers (and more specifically, natural numbers).  Since the set of integers is a countable set, and any subset of a countable set is still countable, the set of perfect numbers must obviously be countable.\n\nAfter rereading your question, I got a little better idea of what you are asking.  It seems that nobody knows if the set of odd perfect numbers is infinite (or even non-null) from the website www.oddperfect.org.  Therefore since I am one of these nobodies, I also don't know.  But I can tell you for certain (as stated above) that the set of odd perfect numbers is countable (I am using the definition of countable in the since that the set can be finite OR infinite).
5768
I personally think they don't exist.  Here's what Wikipedia has to say, "It is unknown whether there are any odd perfect numbers. Various results have been obtained, but none that have helped to locate one or otherwise resolve the question of their existence. Recently, Carl Pomerance and Joshua Zelinsky have both presented heuristics which strongly suggest that no odd perfect numbers exist."
1061702
every time i've asked a teacher this, they've told me that its an even number.  The only reason i can come up with is that it is found between  two odd numbers. (-1 and 1)
19975
If you want symbols for the sets of all odd or even numbers, you can use 2N+1 and 2N, where N is the set of natural numbers.
521941
the odd numbers between 50 and 60 are:\n51 53 55 57 59\nand the only number that add up to  10,\n5+5=10\nthus: 55 is your answer.
806367
The best way to handle creating a program of that sort is to use the Mod function to find whether a number comes out evenly i.e. 7 Mod 3 returns 1 because it gives the remainder after 7 is divided by 3. Use a For...Next statement that take the number (intNum) that the user inputs and "Mod's" it by every number below it. This will give you some of the factors so you can find out the perfect, abundant, and deficient of numbers.
770189
Number will have to be the actual number it is working it out from..and it might not work as a long and definately not an integer.\n\nNumber as String\nOdd as Long (or Integer)\nEven as Long ( or Integer)\n\nIf Not (Number <1 or Number > 10) Then\nNumber = Number / 2\nIf InStr(Number, ".5") then\nOdd = Odd + 1\nElse\nEven = Even + 1\nEnd If\nEnd If\nMe.Print "Odd: " & Odd & " - " & "Even: " & Even
203784
In an odd-number base the number x is odd if Q(x) is odd, and even if Q(x) is even.\n\nIn an even base the number is odd if the last digit is odd, and even if the last digit is even.
779216
Each digit is even\nEach digit is different\nThe number has 4 digits\nIt is divisible by 4.\nIt is not divisible by 8.\nIt is a square.\n\nYour answer must be: 6084\nIt is the square of 78.\nAll digits are even and different.\nIt is divisible by 4.\nIt is not divisible by 8
124700
Zero is not an odd number because it has no value, plus by odd number, that means it has to be 2 units away from the previous odd number (which is 1 or -1) so therefore,, 0 is not an odd number.