Practice problem
Find the rule in the following sequence: 500,100,20,4,45,⋯500, 100, 20, 4, \frac{4}{5}, \cdots500,100,20,4,54,⋯
+5+5+5
−5-5−5
÷5\div 5÷5
×5\times 5×5
Type a concept, like “slope” or “photosynthesis”.