Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What number divided by 4 is the same as that number minus 4?

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

What can you serve, but never eat?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?