Two. The decimal indicates that the zero is significant otherwise it wouldn't be a significant digit.
Chat with our AI personalities
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.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
The answer is five. All the digits are significant.
There are 4 significant digits in 5600.