1. 2/5 is a rational number and would be a repeating decimal.
2. -0.07 is a rational number and would be a terminating decimal.
3. 4/9 is a rational number and would be a repeating decimal.
4. 99 is a rational number and would be a terminating decimal.
5. -0.03521... is a rational number and would be a repeating decimal.
6. Ans 121 is a rational number and would be a terminating decimal.