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Two. The decimal indicates that the zero is significant otherwise it wouldn't be a significant digit.

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Q: How many significant digits are in 20.?
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What is 310 times 20 in significant digits?

When using significant digits, the product has only the number of significant digits as the lowest number in the factors. "20" has two significant digits and "310" has three. Therefore, the product has to have two significant digits. 310 × 20 = 6200 6200 already has two significant digits.


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The number 20 has two significant figures. In scientific notation, it would be written as 2.0 x 10^1, indicating that both digits are significant. Significant figures are the digits in a number that carry meaning contributing to its precision.


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Well, honey, 1467 has four significant digits. It's not rocket science, just count the numbers that actually matter and ignore those pesky zeros at the end. Keep it simple, sweetheart.


How many significant digits are in 123.09?

Five. All nonzero digits are significant and zeros in between significant digits are significant.


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