Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

I shave every day, but my beard stays the same. What am I?

What jumps when it walks and sits when it stands?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Why did the Girl throw the butter out of the window?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?