hello everyone

i am having problem with 2 question :

1) say i don't know the letters a-z and i need to create the word

" Probability" from the letters "P-r-o-b-a-b-i-l-i-t-y " . ( i have exactly 11 places )

2) i have 4 kids with different names but i don't know the names of either of them. what is the prob that i wont call either of them in the right name?

please help me(this forum rockz )

mormor83