Question 16
Archaeologists find five symbols representing five different numbers whose sum is 15. The three equations are shown below. What number does the spade represent?
Interpretation for grading: the supplied solution uses nonnegative whole numbers. That number-domain condition is implicit in the original wording and is stated explicitly here; the unrestricted reading is discussed in the reference note.
Scoring note: the source calls this Star of hope. It has the same editorial practice value of 1 point here, with no deductions. No official historical bonus or penalty is claimed.
Interpretation for grading: the supplied solution uses nonnegative whole numbers. That number-domain condition is implicit in the original wording and is stated explicitly here; the unrestricted reading is discussed in the reference note.
Scoring note: the source calls this Star of hope. It has the same editorial practice value of 1 point here, with no deductions. No official historical bonus or penalty is claimed.