Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

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

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

Can you name an animal whose killing cannot be performed without spilling your own blood?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

How many times in a given day, minutes and hour clock comes in a straight line ?

Can you find the six hidden animals in the picture below?

You can see it everyday, But cannot touch it at will. What is it?