Can you solve below mathematical equation?

2^1234 - 2^1233

Count the number of triangles in the below picture?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

What can go through glass without breaking it?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What do you see in the image below

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?