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Chat with our AI personalities
there are 10 groups of 10
2/5 or 2 out of 5 (40% chance)
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There are 73 groups of 10 and 1 left over, or 73.1 groups of 10.
The poorly worded question leaves doubt as to what the answer is. If Ken gave Andrew 10 more marbles, and Andrew ends up with a hundred, Andrew started with 90. If Ken gave him the same number Andrew already had plus ten to equal 100 marbles, Andrew started with 45 and Ken gave him 55.