Such heart rate at rest indicates cardiac efficiency of an individual, and ranges between 60 to 100 bpm (beats per minute) for adults. However, values closer to the lower limit of this range qualify as a good resting heart rate. In fact, well trained athletes show a resting heart rate between 40 to 60 bpm.
Rule 1. With a computer, use only one space following periods, commas, semicolons, colons, exclamation points, question marks, and quotation marks. The space needed after these punctuation marks is proportioned automatically.
In maths, the exclamation mark is called a Factorial, that means that you have to multiply a number with the numbers before it. For example 5! (read five factorial) equals 5x4x3x2x1=120. And while we're that, lets talk about your next natural question, what's 0! Its 1. But don't ask me why.