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Question : The value of $ \frac{(p-q)^3+(q-r)^3+(r-p)^3}{12(p-q)(q-r)(r-p)}$, where $p \neq q \neq r$, is equal to:
Option 1: $\frac{1}{9}$
Option 2: $\frac{1}{3}$
Option 3: $\frac{1}{4}$
Option 4: $\frac{1}{2}$
Question : If Q = net charge, t = time, then which of the following equations is correct?
Option 1: t =Q × I
Option 2: I = Q/t
Option 3: Q = A/t
Option 4: I = Q× t
Question : X can do a piece of work in $p$ days and Y can do the same work in $q$ days. Then the number of days in which X and Y can together do that work is:
Option 1: $\frac{p+q}{2}$
Option 2: $\frac{1}{p}$ + $\frac{1}{q}$
Option 3: $\frac{pq}{p+q}$
Option 4: $pq$
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