Question #7640c
1 Answer
Jul 22, 2017
Nine
Explanation:
23 years = 23 × 365 years = 23 × 365 × 24 × 3600 seconds
23 years = 725328000 seconds = 7.25328 × 10⁸ seconds
Order of magnitude of
Therefore order of magnitude of 7.25328 × 10⁸ seconds is 8 + 1 = 9