How many ways we can arrange 4 letters from PROFESSOR?
33210
6-letter permutations in MISSISSIPPI
9218
How many ways to arrange ABCD such that A precedes B, and C precedes D
1405
Arrangements of a,a,a,b,b,b,c,c,c in which no three consecutive letters are the same
62577
The number of ways to order 26 alphabet letters, no two vowels occurring consecutively
83481
How to write 1, 2, ... as a subscript to a letter?
22454
How many combinations can I make?
118625
How to start a letter to 2 persons?
134191
How many faculty positions should one apply to?
115209
Elementary formula for permutations?
104247
Why is "letter" not plural in "two letter words"?
75942
Arranging 5 D's, 6 E's and 3 F's such that the First D precedes the First E which precedes the First F
83252
Spread letters to a given length?
140161
In how many ways can the Letters of the Alphabet be permuted such that it does not contain CAR,DOG,PUN,BYTE
132885
Does it make sense for the professor to write a recommendation letter that is directly readable by the student?
146711
How to assign a list of numbers into letter grades
81850
Chapter with specific number (1, 1b, 2, 2b, 3, 4)
106923
Is it OK to call a professor by his first name when he/she signs emails by only first name?