In which one of the following measure numbers are all of the zeros significant?

Question

Quizplus · Accepted Answer

In 3.945900, all of the zeros are between non-zero digits, so they are significant. In A, 0.0705, the zero after the decimal point is significant, but the zero before the decimal point is not because it only serves as a placeholder. In B, 3,300,000, the zeros at the end serve as placeholders and are not significant. In C, 0.000440, the zeros to the left of the first non-zero digit are not significant.

In Which One of the Following Measure Numbers Are All