If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

What two things can you never eat for breakfast?

Can you decipher the two rows to find the hidden word?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

There are forty elephants and they have forty-fore heads. How can this be possible?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Replace the question mark with the number below given a simple math problem.