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

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Which is the correct shadow of the bird?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

Which number should replace the question mark?

In the picture given below, can you find out which digit will take place of the question mark?