Question
Eighth-grade students threw rubber balls into a box and then tried to guess how many balls had accumulated there. Five students tried to guess: 45, 41, 55, 50, 43, but no one guessed the exact amount. The guesses differed from the truth by 3, 7, 5, 7, and 2 balls (not necessarily in the same order as the guesses). How many balls were in the box?
Difficulty level (1 very easy - 10 very hard): 1
Topics:
Number Theory
Arithmetic
Algebra
->
Word Problems
Logic
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Reasoning / Logic
Combinatorics
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Case Analysis / Checking Cases
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Processes / Procedures
- Beno Arbel Olympiad, 2017, Grade 8 Question 1
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