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

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

When it's bad luck to meet a black cat?

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.

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?