Sagot :
A = {p,h,i,l,n,e,s}
It basically just a list of the letters, but repetition of elements in the list is not necessary.
It basically just a list of the letters, but repetition of elements in the list is not necessary.
{P,H,I,L,N,E,S}
you shouldn't use the same letter twice nor trice. it should be one only. so you can see one I instead of three
you shouldn't use the same letter twice nor trice. it should be one only. so you can see one I instead of three