Question 5701: Is 3 1/2 an element of the set of real numbers or naturals?
Found 3 solutions by longjonsilver, FadelSalem, CoolRekt:
Answer by longjonsilver(2297)   (Show Source):
You can put this solution on YOUR website! the natural numbers are the integers (with or without zero...this is questionable).
So, your number is not an integer, so not Natural..It is however Real...so it belongs in the Real Set.
Jon.
Answer by FadelSalem(12)  (Show Source):
You can put this solution on YOUR website! there are many set of numbers:
Count number set = {1,2,3,4,..........}
N=Natural Numbers set ={0,1,2,3,4,......}
It consists of count numbers set with zero
Z= Integer numbers set = {....,-3,-2,-1,0,1,2,3,....}
Z= All natural numbers set with negatives.
Q= Rational numbers set ={a/b: a,b are integers, b doesn't equal zero}
Q= All integers with all decimials and fractions
Q`=Irrational numbers set (numbers cannot be in Q)
Q` doesn't contain any number from Q "it contains numbers as Sqrt3, Pi, etc"
R=Real numbers set"All numbers represented on number's line"
R contains all previous sets
so we find 3 1/2 in Q, R only and it doesn't contained in N or Z
Answer by CoolRekt(53)  (Show Source):
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