1. How many significant figures do each of the following numbers have: (a) 214, (b) 81.60, (c) 7.03, (d) 0.03, (e XXXXXXXXXX, (/) 3236, and (g) 8700?
2. Write the following numbers in powers of ten notation: (a) 1.156, (b) 21.8, (c XXXXXXXXXX, (d XXXXXXXXXX, (e) 0.219, and (/) 444.
3. What is the percent uncertainty in the measurement 5.48 ± 0.25 m?
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