Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

What word does this rebus represent?

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