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1. 25 is a positive number and would be a whole number decimal.
2. -0.07 is a negative number and would be a decimal with two decimal places.
3. 49 is a positive number and would be a whole number decimal.
4. 99√ is a positive number and would be an irrational decimal.
5. -0.03521... is a negative number and would be a repeating decimal.
6. 121√ is a positive number and would be an irrational decimal.