How many sig. figs. are in the following numbers?
1) -16
5) 10,000
2) 5.000 x 1011
6) 2060
3) 0.009090
7) 3.50 x 10-5
4) 4,010
8) 80.011
9) 97.0
10) 0.0010
11) 46.074
12) 0.6

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