In a B-school having 100 students in the mba, 15 students specialize in marketing and hr, 17 students specialize in hr and systems, 16 students specialize in marketing and systems. Number of students specialized in only 1 field is 22 for all 3 fields. How many students specialize in all 3 fields ( Marketing, HR, Systems)?
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thank u u so so sorry for a few more questions a good time
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