John is the son of Jacob.
So,
Jacob is the_____of John's father?

Replace the question mark with the number below given a simple math problem.

Can you find the missing piece of the Porsche?

Find out the missing number in the picture attached:

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?