ist is 8=56 equal and 7=42 ,6=30,5=20

Question

3=?

Answer 1

8 * 7 = 56

7 * 6 = 42

6 * 5 = 30

5 * 4 = 20

4 * 3 = 12 (This one was missing.)

3 * 2 = 6