What the Numbers Mean. Many of the terms you see on labels or supplement web sites can help you understand how much of the vitamin or mineral you should take. The RDA (Recommended Dietary Allowance) and the AI (Adequate Intake) are the amounts of a vitamin or mineral you need to keep healthy and stay well-nourished.
Unless you have a Bosendorfer piano-then you have up to 97 Notes. ~If you have come here to find a key to unlock your piano please visit our online shop piano Keys and Locks department. For more information on piano keys and piano compass or visit our Piano Discussion Forums.
There are 88 keys on the piano. Of these, 52 are white and 36 are black. The white keys are called naturals. The black keys received their name because each is either a sharp note or a flat note depending on in which key the piece is written. An A sharp, for example, is also a B flat.