No, 3 of them.
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009999991 rounded to 2 significant digits is 1.0e7
2 of them.
Two of them which are 1 and 2
That rounds down to 34.
When rounding 1286 to 2 significant figures, you must consider the first two non-zero digits from the left. In this case, those digits are 1 and 2. The digit to the right of 2 (8) is greater than 5, so you round up. Therefore, 1286 rounded to 2 significant figures is 1300.