Data type conversion

Which of the following is/are true?
  1. A string value can be assigned to a single-precision property
  2. An integer value can be assigned to a string property
  3. A single-precision value can be assigned to a double-precision property
  4. A double-precision value can be assigned to a single-precision property
  5. You can convert strings to single-precision numbers
  6. You can convert single-precision numbers to strings
  7. An integer string can be assigned to a double-precision property
Explain your answer.

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