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| rev | Admin | (Created page with "'''Solution: A''' <math display = "block"> \begin{align*} \operatorname{Cov}( C_1 , C_2 ) &= \operatorname{Cov}( X + Y , X + 1.2Y ) \\ &= \operatorname{Cov}( X , X ) + \opera...") | May 6'23 at 11:56 | +1,025 |