Judgment question: if it is TRUE or False

1. Recruitment activities are designed to affect how many people apply for the vacancies.
2. Recruitment activities are designed to affect what kind of people will apply for the vacancies.
3. An unstructured selection interview can always provide reliable and valid results.
4. Cognitive ability tests examine potential candidates physical and mental capacities.
5. We can start a formal business letter with "Dear Mr Michael".
6. If we are writing to a couple, we should say "Dear Mr and Mrs Wangs".
7. In a formal business letter, we should always try to state our purpose at the beginning.
8. Benefits include all financial rewards that generally are not paid directly to the employee.
9. It is usually difficult to caculate the value of benefits compared with one's salary.
10. The provision of benefits to employees will not affect a company's ability to attract and retain quality workers.