Piano Keys: In an octave, there are a total of 13 keys (8 white and 5 black, arranged as 2 and 3).

A bearish inverted hammer candlestick pattern on the weekly chart, coupled with a drop below last week's low, suggests increasing selling pressure. Silver peaked at a trend high of 25.00 last week.

As I mentioned in a recent Charts in Play, flag formations are one of my favorite chart patterns to trade. These triangles generally represent continuation patterns or pauses in a major trend.

This week, Business Insider has been running a series of math tricks, statistical rules and trading patterns that have investors split in two: skeptics and fanatics. Today we continue with a concept ...