In theory, it a continuous numerical variable. In practice, however, it is made discrete by the limitations of recording it - either by hand or by computer.
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in integral data types default value=0 in decimal type default value is 0.0 in boolean default value is fa
The answer depends on the data source. Exchange rates are usually accurate to 6 significant digits.
A pure recurring decimal is a type of repeating decimal. In a pure recurring decimal, all the digits of the decimal are repeated infinitely.
It is a decimal which terminates after 11 digits.
If you will read typecasting on php, you will know more on this. <?php $str = "10"; $num = (int)$str; ?>