In a crossword puzzle, words are to be guessed of which words have each an alternative solution also. The number of possible solutions will be
Correct Answer: Option(d)
Solution: out of the words have an alternative solution.
words are fixed, so they won't affect the number of ways.
So now we find the number of ways in which the remaining
words can be guessed.
Now every word have solutions,
so there are ways to fill each of these words, and for such words,
it can be done in ways.