What is the coolest letter in the alphabet?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

I have eight fingers and two thumbs but I do not live. What Am I?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

What four weights can be used to balance from 1 to 30 pounds?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

How far can you walk into the woods?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

There are forty elephants and they have forty-fore heads. How can this be possible?