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 (leading zeros) are not significant as they only serve to position the decimal point. 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:

zeros to the left of non - zero digits