if a=(1,2,3,4,5),then the number of proper subsets a is A 120 B 30 C 31 D 32 if a=(1,2,3,4,5),then the number of proper subsets a is Correct Answer 31 Bissoy MCQ Team May 27, 2023 গণিত Combined Bank (সমন্বিত ব্যাংক) Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018