Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Can you solve the maths in the below-given picture equation?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

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?

What goes up but never comes down?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

The more it dries, the wetter it becomes. Can you tell what it is?

Find the next number in the series.
1 10 24 43 67 ?