I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

Why do you find that most of the buildings are deprived of the 13th floor?

Which alphabet letter is a question?

A father's child, a mother's child, yet no one's son.

Who am I?

John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

Why did Buffon take the goal with him after every Juventus match?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

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