Question

How many heartbeats in a typical human lifetime?

Answer 1

As per the question, we have to find the number of heartbeat of a typical human in his lifetime,

As be know that 72 heart beat in 1 min,

so in one day total 24 hours, So number of heartbeat in one day $=24\times 60\times 74$

number of heartbeat in one year $=24\times60 \times 75\times365$

total number of years in one typical human lifetime=$75 years$

Hence total number of heartbeat in the lifetime of the typical human $=24\times 60\times 75\times 365=39420000$

$=3.942\times 10^{7}$