DISCRETE MATHEMATICS AND ITS APPLICATIONS ACTUAL TEST PAPER QUESTIONS AND SOLUTIONS GRADED A+

DISCRETE MATHEMATICS AND ITS
APPLICATIONS ACTUAL TEST PAPER
QUESTIONS AND SOLUTIONS GRADED A+

◉ N.
Answer: Natural Numbers {0,1,2,3...}


◉ Z.
Answer: Integers


◉ Z+.
Answer: Positive Integers (not including 0)


◉ Q.
Answer: Rational Numbers {p/q | p and q domains Z}


◉ R.
Answer: Real Numbers


◉ R+.
Answer: Positive Real Number (not including 0)

, ◉ C.
Answer: Complex Numbers


◉ intervals.
Answer: [a,b] [a,b) (a,b] (a,b)


◉ closed interval.
Answer: [a,b]


◉ open interval.
Answer: (a,b)


◉ singleton set.
Answer: has one element (sets within sets can be thought of as
folders on computer)


◉ paradoxes.
Answer: logical inconsistencies


◉ prove two sets to be equal.
Answer: show A ⊆ B and B ⊆ A