Question

How many different passwords can be made from all the letters in the word CALCULUS ?

Answer 1

Answer:
`(8!)/(2!*2!*2!)` = 5040.

Explanation:

Since CALCULUS has 8 letters with 2 indistinguishable C's,

2 indisnguishable L's and 2 indistinguishable U's, the answer is

`(8!)/(2!*2!*2!)` = 5040.