Big Numbers - Our Programs
... will be five lines connecting it to the other points. At least three of these lines are red, or three of them are blue. Suppose there are at least three red lines connecting P to points Q, R and S. (The situation is similar for three blue lines.) Then to avoid any pure red triangles, the lines QR, ...
... will be five lines connecting it to the other points. At least three of these lines are red, or three of them are blue. Suppose there are at least three red lines connecting P to points Q, R and S. (The situation is similar for three blue lines.) Then to avoid any pure red triangles, the lines QR, ...
Triangular number
... A triangular number is the number of dots in an equilateral triangle evenly filled with dots. For example, three dots can be arranged in a triangle; thus three is a triangle number. The nth triangle number is the number of dots in a triangle with n dots on a side. A triangle number is, equivalently, ...
... A triangular number is the number of dots in an equilateral triangle evenly filled with dots. For example, three dots can be arranged in a triangle; thus three is a triangle number. The nth triangle number is the number of dots in a triangle with n dots on a side. A triangle number is, equivalently, ...
