What is so fragile that saying its name breaks it?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

What is always in front of you but can’t be seen?

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?

When it's bad luck to meet a black cat?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

I have an eye but still cannot see.

Who am I?

What number do you get when you multiply all of the numbers on a telephone's number pad?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What does this simple rebus mean?