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

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

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What will you call your mother's brother's brother-in-law?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

What does this rebus riddle means ?

What happened when the wheel was invented?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?