Chapter 1, Problem 45A

To determine

To explain: The way, the last digit differs from the other digit in a measurement.

Explanation of Solution

Introduction:

In a number system, the digit denotes an inter. In a number, last digits always have more preference than other number. Last digits help to estimate scientific measurement in many cases.

Measuring is the comparison of unknown quantities to standard quantities. The last digit is rounded off to get the accurate measurement. For example, the length of box is $l=30\text{cm}$ . Round off the decimal the length of box is $5.5\text{cm}$ . The last digit is the estimated digit. Therefore, the last digit differs from other digits in measurement.

Conclusion:

Hence, last digit in a number helps in scientific measurement.