Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

Can you decipher the below rebus?

PBLUESAISNUERSES

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

What came first, the chicken or the egg?

I have eight fingers and two thumbs but I do not live. What Am I?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

A man dies of old age on his 25 birthday. How is this possible?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?