Integers ending in 0 are always ambiguous. It is not possible to tell whether this number is accurate to the nearest hundred (3 significant figures) or to the nearest integer (5 significant figures).
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4
It has 3 significant digits.
It has two significant digits.
It has 6 significant digits.
How many significant digits does the following operation have(40,200.0 * 0.000240) - 2.778