What does this mathematical rebus means ?

Can you count the number of triangles in the given figure?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

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

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

How can you tell a raw egg from a hard-boiled egg?

What is Luis Suarez's (Soccer Player) favorite tea?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

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?