How many perfect square factors does 1008 have?

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• A 4
• B 6
• C 8
• D 10

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Answer: B. 6

1008 = 2⁴ × 3² × 7

Square → even powers

2 → 0,2,4 → 3 choices
3 → 0,2 → 2 choices
7 → 0 → 1 choice

Total = 3 × 2 × 1 = 6

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