White Box Techniques - General Questions

Cyclomatic complexity gives:

For if (a && b), how many tests are needed for full condition coverage (each of a and b true and false)?

For if (a > 5) { x = 1; } with no else, what is the minimum number of tests for 100% decision coverage?

Loop testing should include running a loop:

A control-flow graph has 9 edges and 7 nodes (one component). What is its cyclomatic complexity?