Can you solve below mathematical equation?

2^1234 - 2^1233

If it took eight men ten hours to build a wall, how long would it take four men to build it?

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?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

What jumps when it walks and sits when it stands?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I’m orange, I wear a green hat and I sound like a parrot. What am I?