State whether the following is "True or False"?

Question

1.The equation y=b for some constant be represents a vertical
line. (2) The number of subsets of a set is never zero.(3)All whole numbers are natural numbers .(4) All irrational number is a terminating decimal. (5) all intergers are rational numbers.

Answer 1

1. False it is horizontal.

2. True - every set has itself and the empty set as subsets so even the empty set has 1 subset.

3. False - (Edit: I got that one backwards - the whole numbers are the natural numbers plus 0)

4. False - A number with a terminating decimal is rational by definition.

5. True

Answer 2

1. False. A horizontal line.
2. True, because the empty set is a subset of every set.
3. False. Zero is a whole number but not a natural number.
4. False. No irrational numbers have a terminating
(or repeating) decimal expansion
5. True. Any integer can be written as a fraction
with denominator 1.

Answer 3

1. False, its horizontal
2.
3. False (the negatives arent)
4. False (that is a definition of rational)
5. True (they are of the form a/b, for the integers b=1)

Answer 4

1)false
2)true
3)true as 0 is natural number i.e. 0ЄN N~{0}is called set of counting numbers
4)false
5)true