the volume of a liquid in a burette should be recorded to two decimal places.
to how many decimal places should the volume of a liquid in a burette be recorded?
two
market convention from the early 1980s to 2006 was that most currency pairs were quoted to four decimal places for spot transactions and up to six decimal places for forward outrights or swaps. (the fourth decimal place is usually referred to as a "pip"). an exception to this was exchange rates with a value of less than 1.000 which were usually quoted to five or six decimal places. although there is no fixed rule, exchange rates numerically greater than around 20 were usually quoted to three decimal places and exchange rates greater than 80 were quoted to two decimal places. currencies over 5000 were usually quoted with no decimal places (for example, the former turkish lira). e.g. (gbpomr : 0.765432 - : 1.4436 - eurjpy : 165.29). in other words, quotes are given with five digits. where rates are below 1, quotes frequently include five decimal places.
exchange rate
just as the same fraction can be written in more than one way, the same real number may have more than one decimal representation. for example, 0.999..., 1.0, 1.00, 1.000, ..., all represent the natural number 1. a given real number has only the following decimal representations: an approximation to some finite number of decimal places, an approximation in which a pattern is established that continues for an unlimited number of decimal places or an exact value with only finitely many decimal places. in this last case, the last non-zero digit may be replaced by the digit one smaller followed by an unlimited number of 9's, or the last non-zero digit may be followed by an unlimited number of zeros. thus the exact real number 3.74 can also be written 3.7399999999... and 3.74000000000... similarly, a decimal numeral with an unlimited number of 0's can be rewritten by dropping the 0's to the right of the decimal place, and a decimal numeral with an unlimited number of 9's can be rewritten by increasing the rightmost -9 digit by one, changing all the 9's to the right of that digit to 0's. finally, an unlimited sequence of 0's to the right of the decimal place can be dropped. for example, 6.849999999999... = 6.85 and 6.850000000000... = 6.85. finally, if all of the digits in a numeral are 0, the number is 0, and if all of the digits in a numeral are an unending string of 9's, you can drop the nines to the right of the decimal place, and add one to the string of 9s to the left of the decimal place. for example, 99.999... = 100.
number