John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you solve the below algebraic mathematical equation?

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

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

What runs around the whole yard without moving?

What is the largest number you can write with just 3 digits?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

What is the longest word in the dictionary?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

There is a place where if I stand up straight, I will still be considered sideways.