IMO CStatement (1): Together, the 5 players scored a total of 20 goals during the tournament.
If the total number of goals scored by the 5 players is 20, we can explore the distribution of these goals among the players. Let's denote the number of goals scored by the players as g1,g2,g3,g4,g5g1,g2,g3,g4,g5 where g1+g2+g3+g4+g5=20g1+g2+g3+g4+g5=20 and each gi≥1gi≥1.
To see if at least one player scored 5 or more goals, consider the scenario where no player scores 5 or more goals. The maximum each player could score would be 4 goals. If each of the 5 players scored the maximum of 4 goals, the total would be 4×5=204×5=20 goals. This scenario is possible, so statement (1) alone does not definitively tell us if any player scored at least 5 goals.
Statement (2): No two of the 5 players scored the same number of goals.
This statement implies that each player scored a unique number of goals. Given that there are 5 players, the possible unique goal counts could be 1, 2, 3, 4, and 5 (or higher). Since the goal counts must be unique and there are only 5 players, the minimum and maximum goal counts must span at least 5 different values.
Combining both statements:
From statement (1), we know the total number of goals is 20. From statement (2), we know that no two players scored the same number of goals. Let’s consider the smallest possible unique values that add up to 20:
1 + 2 + 3 + 4 + 5 = 15 (this sum is too low).
To reach a sum of 20 with unique values, we need to use larger numbers. Let's try:
1 + 2 + 3 + 4 + 10 = 20.
In this case, one player scored 10 goals, which is more than 5 goals. This confirms that at least one player scored 5 or more goals.
Thus, combining both statements, we can definitively conclude that at least one player scored at least 5 goals.
Answer: C. Both statements together are sufficient to answer the question, but neither statement alone is sufficient.