If Lucky had 2 friends and each of them gave him 1 lucky stone, how many lucky stones does Lucky have now? (Assume Lucky already had 1 stone.)
Answer
3
The correct answer is 3 — Sum to get 3 stones.
Step-by-step solution
- Start with the original stone Lucky has (1).
- Add the 1 stone given by the first friend.
- Add the 1 stone given by the second friend.
- Sum to get 3 stones.
Common mistake: Forgetting the original stone and counting only the ones given.
Concept tested: Basic addition
Published · How this solution was prepared and checked
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