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A man lives for 60 years. (Assuming the average rate of his heartbeat is 65 beats per minute) The total number of times his heart beats is (Average no. of days in a year = 365 days)

$\begin {array} {1 1} (A)\;1.92 \times 10^9 & \quad (B)\;2.05 \times 10^9 \\ (C)\;2.68 \times 10^9 & \quad (D)\;3.21 \times 10^9 \end {array}$

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Ans : (B)
$2.05 \times 10^9$
answered May 28, 2014 by thanvigandhi_1

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