What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

A father's child, a mother's child, yet no one's son.

Who am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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?

In the four images below, can you find the odd one out?

Can you decipher the below rebus?

PBLUESAISNUERSES

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?