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Mathematical problems A school held a mathematical competition.
What do the positive and negative numbers in the (1) table mean?

Final score: score

(2) Which player scored the highest? Which player scored the lowest?

Seven players scored a maximum of 5, and five players scored a minimum of -6.

(3) How many questions did the player with the highest score ask at most?

2 channels 7-2+0=5

(4) How many questions can the player with the lowest score answer correctly at most?

Two lanes 2-8=-6