The 7 letters of the word
G L E N E L G
Q. What is the probability that the sequence is the same from right to left and vice-versa.
Clue please, Thanks
The denominator can be arranged in ways.
can be arranged in ways.
The numerator can basically be arranged in way. (Because the N has to remain in the middle, thus 2!. The first and third terms, as boxed in the numerator, are the same, so we have to divide by 2.)
Highlight text for answer.
****
Thus the probability is: 6\630 = 1\105
****