Suppose each pattern is continued on a hundred chart. The numbers in each pattern are coloured red. For each pattern,
what percent of the numbers on the chart are red?
Explain your strategy for each pattern.
a) 4, 8, 12, 16, 20, ... b) 1, 3, 5, 7, ...
c) 2, 4, 8, 16, ...
d) 1, 3, 7, 13, ...