How to calculate the rules of 9, 12, 18 and 36? We need a formula 10. 12, 18, 36, 90, () So how to calculate 9 12 18 36. What are the laws and formulas? Let's say that a rope is 36 meters long, and there are n people who want to divide it. It must be average, and N is between 1 and 4, When you're alone, it's 36 meters When two people, but to 18 meters When it's three, it's 12 meters When it's four, it's nine meters Of course, but are there any rules?

How to calculate the rules of 9, 12, 18 and 36? We need a formula 10. 12, 18, 36, 90, () So how to calculate 9 12 18 36. What are the laws and formulas? Let's say that a rope is 36 meters long, and there are n people who want to divide it. It must be average, and N is between 1 and 4, When you're alone, it's 36 meters When two people, but to 18 meters When it's three, it's 12 meters When it's four, it's nine meters Of course, but are there any rules?

Is there only four numbers? 9 + 3 = 12 + 2 * 3 = 18 + 2 * 3 of 3 = 36 or 36-18-12-9 minus one to find the middle difference 3, 6, 18, 3 * 2 = 6, 3 * 6 = 18. If there are any numbers below, it is easy to find the rule. Is this a high school problem?

Is 36 × (1 / 12 + 5 / 18-2 / 9) a simple operation? If so, list the formula

The distribution law of multiplication is the simplest
36×1/12+36×5/18-36×2/9=3+10-8=5

Simple calculation of 3.8 times 7.2 plus 3.8 times 3.8 minus 3.8

=3.8×（7.2+3.8-1） =3.8×10 =38