The midvalue of the class interval (a-b) is

\sqrt{a b}

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\frac{a + b}{2}

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\frac{a \times b}{2}

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\frac{a - b}{2}

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Solution

The correct option is B $\frac{a + b}{2}$
Midvalue of class interval=Sumofclassboundaries2=a+b2

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