3. (Graphs) (a) The Earth is invaded by three cute aliens which are called Blah, Ha-ha and Achoo. They love to explore new planets. They want to catch 6 creatures for their not-so-awful experiments: a rabbit, a tiger, a bear, a human, a snail, and a shark Blah can catch a rabbit in 5 min, a tiger in 3 min, a bear in 4 min, a shark in 5 min. e Ha-ha can catch
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