How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

You can see it everyday, But cannot touch it at will. What is it?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

The answer I give is yes, but what I mean is no. What was the question?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?