Find the hidden tiger in the given optical illusion ?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

What Deficiency does the below rebus represent?

VIT_MIN

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

Can you start the fire using two pieces of wood?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

How many letters are in the alphabet?

Can you count the number of lines in the below picture?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Solve this riddle by finding the odd one out from the rest.