Find number of ssg in a5?

We have |G|=60=22⋅3⋅5|G|=60=22⋅3⋅5 Let npnp be the number of Sylow pp-subgroups of GG. By Sylow's third theorem, we have n3∈{1,4,10}n3∈{1,4,10}. But GG contains 2020 elements of o...