We have 1,2,3,4,5,6,7,8,a,b,c,d,e,f
the numbers and letters are in order. How many permutations
(arrangements) are there...
We have 1,2,3,4,5,6,7,8,a,b,c,d,e,f
the numbers and letters are in order. How many permutations
(arrangements) are there in a way that the order is maintained for
numbers and the order is maintained for letters? Explain.
How many strings of seven lowercase letters from the English
alphabet contain
a. the letters a...
How many strings of seven lowercase letters from the English
alphabet contain
a. the letters a and b in consecutive positions with a preceding
b, with all the letters distinct?
b. the letters a and b, where a is somewhere to the left of b in
the string, with all the letters distinct?
Using seven different Scrabble blocks with the letters:
a,e,o,n,r,s,t written on them:
a) How many different...
Using seven different Scrabble blocks with the letters:
a,e,o,n,r,s,t written on them:
a) How many different seven letter arrangements are
possible?
b) How many three letter arrangements are possible?
c) If I choose three letters, then in how many ways can I do
this
d) If I select six letters then in how many ways can I do
this