I travel all around the world but always stay in the corner. What am I?

Can you solve below mathematical equation?

2^1234 - 2^1233

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

Replace the question mark in the picture below.

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

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

Replace the question mark with the correct number.

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?