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Question

Which letter corresponds to the closest representation of 7 on the number line below?
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A
A
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B
B
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C
C
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D
D
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Solution

The correct option is C C
In the given number line, we observe that there is a difference of 0.05 between each of the point. That is, all points on the number line from left to right are:

2.1,2.15,2.2,2.25,2.3,2.35,2.4,2.45,2.5,2.55,2.6,2.65,2.7,2.75,2.8

Now, consider the points A,B,C and D on number line as follows:

The point A is somewhere between 2.5 and 2.55

The point B is somewhere between 2.55 and 2.6

The point C is somewhere between 2.6 and 2.65

The point D is exactly 2.75

Now, the value of 7 is 2.646 and point C is somewhere between 2.6 and 2.65.

Hence, the letter C corresponds to the closest representation of 7 on the number line.

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