Can you solve below mathematical equation?

2^1234 - 2^1233

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Do you know who was buried in John's tomb?

Why is the Hole below a Lock?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

I have eight fingers and two thumbs but I do not live. What Am I?