A teacher is randomly handing out tests. There are 2 different versions of the test, Test A and Test B. If there are 8 tests in all and an equal number of each version, what is the probability that the
first 4 students will all receive Test A?

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.