Question

1. which of the following digits are not considered significant?

zeros to the left of non - zero digits
all non - zero digits
trailing zeros in a decimal
zeros between non - zero digits

Explanation:

Significant figures rules state that zeros to the left of non - zero digits are placeholders and not significant. Non - zero digits are always significant. Trailing zeros in a decimal are significant as they indicate precision. Zeros between non - zero digits are significant.

Answer:

A. zeros to the left of non - zero digits