Can you find the missing piece of the Porsche?

Can you solve below mathematical equation?

2^1234 - 2^1233

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

The answer I give is yes, but what I mean is no. What was the question?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Replace the question mark with the correct number in the below-given picture?