Imagine that you are head of testing department of a software house. In your department, there

are several testing staff who design test$-$cases for different software modules. A module holds

some $$ number of lines of code and each test case may cover some of the code lines of the module.

For example, let our very simple module contains $10$ lines of code $($i$.$e$.=10)$ and we have $=$

$6$ number of different test cases prepared for the testing the module. Table $1$ shows an example

line numbers covered by each of $6$ different example test cases.