Examlex
How many permutations of all 26 letters of the alphabet are there that contain at least one of the words: CAR, CARE, SCAR, SCARE?
Q26: If G(x) is the generating function for
Q32: Using the ordinary alphabet and allowing repeated
Q34: Suppose a phrase-structure grammar has productions S
Q41: 4, 8, 16, 32, 64, . .
Q44: For the following Turing machine T
Q49: 1, 0, −1, 0, 1, 0, −1,
Q54: For the following Turing machine T
Q55: Set up a generating function and use
Q86: If T is a tree, then its
Q137: How many words begin with a vowel