Afellow classmate tosses 5 coins and finds that 3 of them come up tails. which of the following is the best conclusion for her to come to ?

Which of the following are accepted without proof in a logical system? check all that apply.

Would greatly appreciate these 3 answers

What are the angle measures in triangle abc? m∠a = 90°,  m∠b = 30°,  m∠c = 60°m∠a = 60°,  m∠b = 90°,  m∠c = 30°m∠a = 90°,  m∠b = 60°,  m∠c = 30°m∠a = 60°,  m∠b = 30°,  m∠c = 90°