By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Find the Goldfish below the given Image.

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?