The number of significant figures in 1.73 seconds is _____

The Correct Answer is: (c) Three

Explanation:
Significant figures represent the digits in a number that carry meaning contributing to its precision. This includes all non-zero digits, any zeros

between significant digits, and trailing zeros in the decimal part.

In the number 1.73, all digits — 1, 7, and 3 — are non-zero, and hence all are significant. Therefore, 1.73 has 3 significant figures.

Information Booster:
• The more significant figures, the more accurate the measurement is considered.
• 1.00 has three significant figures, while 100 has only one, unless specified (e.g., 1.00 × 10²).
• Trailing zeros without a decimal point are not significant.
• Used widely in scientific measurements, engineering, and data analysis.