"Probably"? There is no "probably" in the origina statement. The converse of "if A then B" is "if B then A". The converse is "if I am in the 10th grade then I am a sophomore."Converse: If I'm in the 10th grade then I'm probably a highschool sophomore.
It's not clear what the question was! You said only "turn the statement into". Where did that "conclusion" come from?Biconditional: I'm a sophomore if and only if im in the 10th grade.
Conclusion: The Biconditional is true.
How did i do? Are they correctly written?