Gabbro is a coarse-grained, dark colored, intrusive igneous rock that contains feldspar, pyroxene and sometimes olivine. The specimen shown above is about two inches (five centimeters) across. Obsidian is a dark-colored volcanic glass that forms from the very rapid cooling of molten rock material.
The Most Drawn Numbers in Keno. These are the 5 hot numbers (often drawn): 23, 34, 72, 1 and 4. Most frequent state draws numbers to the numbers that have come out quite often in the last 50 draw are 3, 16, 44, 58 and 78. As much drawn numbers a gambler has his tickets, as much he will collect. The maximum of drawing numbers is 20, but actually, no one hit 10 out of 20 numbers ever (and is not possible).
Keno is played using a Keno card. A Keno card is numbered 1 through 80, arranged in 8 rows of 10 numbers. Players mark off anywhere between 1 and 20 different numbers on their Keno card. Some casinos may limit the amount of numbers that can be selected to 1 though 10 numbers, 12 numbers, 15 numbers or any other amount.