Solve[(1/2)*(1+Erf[(t-10)/Sqrt[8]])==1-0.01^(1/60),t]

Plot[Last[Last[Last[Solve[(1/2)*(1+Erf[(t-10)/Sqrt[8]])==1-0.01^(1/n),t]]]],{n,1,10}]

Solve[(1/2)*(1+Erf[(t-10)/Sqrt[8]])==1-0.01^(1/n),t]

10*0.05^(1/10)

Plot[Floor[n*0.05^(1/n)],{n,1,10}]

1-0.01^(1/2)

Binomial[32,5]

32!/(5!*(32-5)!)