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Balance Scales (993)
Instruction:
Several balance scales are given, each with certain symbols (representing weights) depicted on the sides of the scales. Identical symbols have identical weight. (Different symbols may or may not have different weights.) All symbols have positive weight. The scales are balanced, meaning that the sum of the weights on one side is equal to the sum of the weights on the other side. The order of the symbols within each side does not matter. If there are more than two identical symbols on one side, the number of such symbols is indicated after a multiplication sign ("×"). One side of the last scale is marked with a symbol followed by "×?" , indicating that that section of the scale has an certain number of that symbol (not necessarily more than two), but you have not been told what that number is. What is that number?