Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

What's the only room from which no one can enter or leave

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

John is on an island and there are three crates of fruit that have washed up in front of him. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges.

Each crate is labelled. One reads 'apples', one reads 'oranges', and one reads 'apples and oranges'. He know that NONE of the crates have been labeled correctly - they are all wrong.

If he can only take out and look at just one of the pieces of fruit from just one of the crates, how can he label all of the crates correctly?

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

What number divided by 4 is the same as that number minus 4?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

2, 3, 5, 9, 17, _ What is the next number in the sequence?