# How many threes are there in the first one million digits of pi?

The ratio of the circumference of a circle to its diameter is represented by pi. This number is an infinite decimal with no known repeating strings of numbers. The number three appears 100,230 time...
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http://www.answerbag.com/q_view/1984379

## How many digits are there in a credit card?

MasterCard, Discover and most Visa cards contain 16 digits in the credit card number. Some Visa cards only contain 13 digits. American Express credit cards have 15 digits and Diners Club credit car...
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http://www.answerbag.com/q_view/2102471

## How many digits in an American mobile phone number and are there variants in the pre-fix no's state to state?

You have to dial an area code unless you are already in the dialling area of the number. So the area code is 3 digits. Then the number is 7. Example a Chicago number would be area code 773, then y...
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http://answers.yahoo.com//question/index?qid=20080801120003AA0eL4i

## How many million dollar winner have there been on who wants to be a millionaire?

you have to have married parents and at least two siblings

http://wiki.answers.com/Q/How_many_million_dollar_winner_have_there_been_on_who_wants_t...