LON-CAPA P22.problem

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Question 22

Which of the following is equivalent to $1/y + 1/u$ ?

$1/(u+y) \quad \quad \quad \quad \quad$

$u/y \quad \quad \quad \quad \quad$

$2/(y+u) \quad \quad \quad \quad \quad$

$(u+y)/(uy) \quad \quad \quad \quad \quad$

$1/(uy) \quad \quad \quad \quad \quad$

None of these.

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