Three students measured the length of a corridor and reported their measurements. The values of their measurements were different. Which of the following may be the reason for their different measurement?

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Their scales of measurement may not be standard, or they may be using different scales of measurement.

The length of the scale may not be proper, i.e., the length of the scale may be shorter than the length they want to measure.

There may be some errors in the scale they are using, or they may not be using the correct method of observing the scale.

All of the above.

answer is D.

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Detailed Solution

The values of measurements are different because students use different scales or have errors in measuring or length of their scales.
Three students measured the length of a corridor, and their measured values were different because the scale of measurement used was different, the length of the scale used was less than required, or the method used for measurement was incorrect.

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