Discrete Math Question:

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Which of the following function f: Z X Z → Z is not onto?
a) f(a, b) = a + b
b) f(a, b) = a
c) f(a, b) = |b|
d) f(a, b) = a - b

Discrete Math Interview Question
Discrete Math Interview Question

Answer:

c) f(a, b) = |b|

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The value of ⌊1/2.⌊5/2⌋ ⌋ is _______________.
a) 1
b) 2
c) 3
d) 0.5		The domain of the function that assign to each pair of integers the maximum of these two integers is ________.
a) N
b) Z
c) Z +
d) Z+ X Z+