Which number should replace the question mark?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What has one eye, but can’t see?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

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

When monkey rotate the gear, which mark will be hit 1 or 2 ?

When 99 is considered higher than 100?