A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

John and Jacob are playing bets. John gives $10 to Jacob and Jacob deals four cards out of a normal 52-card deck which are chosen by him completely randomly. Jacob keeps them facing down takes the first card and shows it to John. John has a choice of either keeping it or looking at the second card. When the second card is shown to him, he again has the choice of keeping or looking at the third which is followed by the third card as well; only if he does not want the third card, he will have to keep the fourth card.

If the card that John is choosing is n, Jacob will give it to him. Then the cards will be shuffled and the game will be played repeatedly. Now you might think that it all depends on chance, but John has come up with a strategy that will help him turn the favor in his odds.

Can you deduce the strategy of John?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Why is a river so rich ?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

You can hear me, but you can't touch or see me.

What am I?

If a wheel has 54 spokes, how many spaces are there between the spokes?