1. Explain the na.omit() function with an example and syntax. 2. Explain the na.exclude() function with an example and syntax. 3. Explain the na.fail() function with an example and syntax. 4. Explain...

1. Explain the na.omit() function with an example and syntax. 2. Explain the na.exclude() function with an example and syntax. 3. Explain the na.fail() function with an example and syntax. 4. Explain the na.pass() function with an example and syntax. 5. Explain the head() function with an example and syntax. 6. Explain the tail() function with an example and syntax.

7. Explain the merge() function with an example and syntax.