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Find the odd man out: 64, 125, 216, 343, 500

A125
B64
C500
D216
Answer & Solution
Correct answer: C. 500
1. Test each for perfect cube: 64 = 4^3, 125 = 5^3. 2. Continue: 216 = 6^3, 343 = 7^3. 3. 500 is NOT a perfect cube (7^3 = 343, 8^3 = 512). 4. So 500 is the odd man out. _Source: ICAI BoS Foundation Paper 3, Ch 9 'Odd Man Out', p.10_
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