Question

question 1 - multiple choice

1. which of the following digits are considered significant in a measurement?

all positive digits
all negative digits
all nonzero digits
all estimated digits

Explanation:

In measurement, significant digits include all nonzero digits. Positive and negative digits don't define significance. Estimated digits are not always significant on their own. Nonzero digits always contribute to the precision of a measurement.

Answer:

all nonzero digits