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

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

What has many keys but can’t open a single lock?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?