1
Considered known as an unlucky number.
2
The highest level on the pH scale, or the number of colors in two rainbows.
3
The sum of the first five consecutive numbers.
4
Proxima-B's orbit is equal to _______ days. The first rep-digit.
5
The number of eggs in a dozen, a total of _____ months, and a piston can only push up to _____ blocks.
6
The number of sides and angles in a triangle, primary colors, and Dale Earnhardt's numbered car.
7
The word has four words and is equivalent in length. Also 2 squared.
8
The number of innings in a baseball, the number of planets circling the sun, known as the third squared number.
9
The number of spots in a ladybug, colors on a rainbow, and notes on a scale.
10
The number of vowels, sometimes "Y"
11
Also means nothing.
12
Five fingers in two hands each, number of Arabic numerals.
13
The only even prime number.
14
This number is neither prime nor composite.
15
The only known number to be divisible by the first three consecutive numbers.
