Final answer:
A human blinks approximately 2.4 × 10^7 times in 3 years.
Step-by-step explanation:
A human blinks approximately 8 × 10^6 times per year. To calculate approximately how many times a human blinks in 3 years, we multiply the number of blinks per year by the number of years: 8 × 10^6 × 3 = 24 × 10^6 = 2.4 × 10^7. Therefore, a human blinks approximately 2.4 × 10^7 times in 3 years.
Learn more about Calculating the number of blinks in a given time period