Ok i have a maths problem .... Its a sum of probability .... I got the answer but probability is a bit dodgy and its so easy to make a mistake .... Can some one also try this problem
There is a dictionary containing only 5 letter words and there are only 4 letters viz. a, b, c, d, e.
The 1st word is aaaaa the second is aaaab the third is aaaac and so on.
Now we need to find the position of the word "adbca"
The answer i worked out is 216 .... can someone back up my answer ...... none of my friends have solved it ..... plus group solving aint allowed (if caught then im screwed
)