👉 Birkies is a scientific concept in mathematics. It refers to the number of times a sequence of numbers must be divided by 10 and then multiplied by 2 before the result can be simplified or reduced to its simplest form. For example, if we have a sequence of numbers like {3, 7, 15}, birkies would be calculated as follows: - Dividing each number in the sequence by 10 gives us: - 3 ÷