Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Remove two matchsticks to make the below equation correct.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

What does this simple rebus mean?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

Find out the number of circles in the given picture having Illusion

I have Rs.50 and I spend it in the way as below.

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.