Problem 10 · 2018 Math Kangaroo
Medium
Spatial & Visual Reasoning
reflection
How many of the hands in the picture show a right hand?
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Answer: C — 5
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Hint 1 of 3
Hold up your own right hand and try to match it to each picture by twisting and turning it.
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Hint 2 of 3
If you can make your right hand look exactly like the hand in the picture, that one is a right hand.
Still stuck? Show hint 3 →
Hint 3 of 3
Go through all the hands one by one and keep a tally of the right hands.
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Approach: match your own right hand to each picture and count
- Use your own right hand as a checker: for each picture, try to turn your right hand so it looks the same.
- If your right hand can match it, mark that picture as a right hand; otherwise it is a left hand.
- Checking all the hands this way, exactly 5 of them are right hands.
Mark:
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