Question
Four of the five parts numbered (1), (2), (3), (4) and (5) are exactly equal. The number of that part which is not equal will be your answer.
Solution
9Β³ - 8Β³ - 6Β³ = 1 β676 - β484 = 4 β6859 - β3375 = 4 8Β³ + 2Β² - 7Β³ - 13Β² = 4 β841 - β625 = 4
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