1)

1: $n\ge {\left(\frac{z}{d}\right)}^2\ast p\ast (1-p)\le {\left(\frac{2,58}{0,005}\right)}^2\ast 0.25\ge 49923$
2: $n\ge {\left(\frac{z}{d}\right)}^2\ast p\ast (1-p)\ge \left(\frac{2.58}{0.01}\right)\ast 0.06\ast (1-0.06)\ge 3754.21$

2)

$n\ge {\left(\frac{z}{d}\right)}^2\ast p\ast (1-p)\ge {\left(\frac{1.96}{0.034}\right)}^2\ast 0.534\ast (1-0.534)>826,9542$

3)

$n\ge {\left(\frac{1.96}{0.01}\right)}^2\ast 0.75\ast (1-0.75)\ge$