Length of the interval $(- 3, 7]$ is

10

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11

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- 10

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Solution

The correct option is A $10$
Length of interval $[x, y]$ or $(x, y]$ or $[x, y)$ or $(x, y)$ is given by $| y - x |$ .
So we get length of interval $(- 3, 7)$
$= | 7 - (- 3) | = 10$

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