Problem 2 · 2021 Math Kangaroo
Easy
Logic & Word Problems
path-tracingcareful-counting
How many fish will have their heads pointing towards the ring when we straighten the line?
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Answer: C — 6
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Hint 1 of 2
Pretend you grab the ring and pull the string straight; each fish stays facing the same way it was tied on.
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Hint 2 of 2
Start at the ring and look at each fish in turn, putting a tick on every fish whose head points back toward the ring.
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Approach: trace the line and count fish whose heads face the ring
- Follow the wiggly string starting from the ring and look at each fish one at a time.
- Tick the fish whose nose points back toward the ring, and skip the ones whose nose points away.
- Counting the ticked fish gives 6.
- So the answer is C.
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