$\frac{a}{3} + \frac{b}{6} = 1$
If $a$ and $b$ are positive integers in the equation above, then what is the value of $a b$ ?

4

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2

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6

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8

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5

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Solution

The correct option is A $4$
Given eq
$\frac{a}{3} + \frac{b}{6} = 1$
$2 a + b = 6$ ---(1)
putting $a = 1$ in eq (1)
$b = 4$
Hence $a b = 4$

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