A pencil is placed next to a ruler such that the ends of the pencil are at $6.2 c m$ and $13.9 c m$ markings on the ruler. What is the length of this pencil?

6.7 c m

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7.7 c m

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8.3 c m

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7.3 c m

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Solution

The correct option is B $7.7 c m$
The length of the pencil can be calculated as the difference in the readings marked on the ruler. Hence, the length of the pencil is:
$13.9 - 6.2 = 7.7 c m$

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