Sum. To build the triangle, start with 1 at the top, then continue placing numbers below it in a triangular pattern. Each number is the numbers directly above it added together.
2 and five fifths = 3
I hope that's help. Good night .
Input data
Price model rocket = $24
Tax = $1.92
What is the percent of sales tax?
Procedure
r = percent of sales tax

The answer would be 8%
Probability of an egg coming out of the boiling process with a cracked shell:

10% = 5
80% = 40
2% = 1
82% = 41
41