Sets, Relations and Functions
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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2
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4
5
Check
Across:
1.
a ∗ b = b ∗ a ∀ a, b in X.
3.
if f is one-one and onto.
4.
(a, a) ∈ R ∀ a ∈ X
5.
a ∗ e = a = e ∗ a ∀ a ∈ X.
Down:
2.
(a ∗ b) ∗ c = a ∗ (b ∗ c)∀ a, b, c in X
OK