A number containing at least one five will be passed to your function, which must return true or false depending upon whether the English spelling of the number may contain "five" anywhere. For example:
n = 5; return true since it is spelled "five" n = 15; return false since it is spelled "fifteen" and does not contain the four-letter string "five"
This criterion applies to any common spelling of the number. For example, 1500 can be written fifteen hundred. But, it can also be written one thousand five hundred. So, 1500 would be considered to contain a "five" for this problem.
See the test suite for more examples.