Approximately How Many Times Does an Average Human Heart Beat

question 91

Multiple Choice

Approximately how many times does an average human heart beat in a lifetime?

• A) 3 × 10¹¹
• B) 3 × 10¹⁰
• C) 3 × 10⁹
• D) 3 × 10⁸
• E) 4 × 10⁷

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