Question
If β$β means βΓ·β, β#β means β-β,
β!β means βΓβ and β^β means β+β, then the value of 84 ! 5 # 6 ^ 21 $ 7 isSolution
84 Γ 5 β 6 + 21 Γ· 7 84 Γ 5 β 6 + 3 420 β 6 + 3 = 417.
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