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

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

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

I am white when I am dirty, and black when I am clean. What am I?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

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

I know a nine-letter word having only one vowel.
Do you ?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?