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Question
Give the answer in scientific notation:
A human heartbeats at an average of 80 beats per minute. How many times does it beat in an hour?
Sum
Solution
Heartbeat per minute = 80 beats
an hour
One hour = 60 minutes
Heartbeat in an hour = 60 × 80
= 4800
= 4.8 × 103
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Chapter 1: Numbers - Exercise 1.7 [Page 47]
