Which of the following could be a $π$ -parameter of the function $ϕ$ (F, V, $ρ, μ,$ L)=0 when V, $ρ$ and L are taken as repeating variables ?

- 1
  
  $\frac{V L μ^{2}}{ρ}$
- 2
  
  $\frac{F^{2}}{V^{2} ρ L}$
- 3
  
  $\frac{F}{ρ L^{2} V^{2}}$
- 4
  
  $\frac{V L ρ}{\sqrt{μ}}$

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