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

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Can you arrange the six given marbles in a manner that each one of them is touching all four marbles of different colours?

Can you find the dog hidden in a group of pandas?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

When 99 is considered higher than 100?

What goes up but never comes down?

These types of puzzles are known as charades. What you have to do is to find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be the 'office'.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

What seven-letter word has hundreds of letters in it?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.