Set Theory

Consider two sets $$ A = \{2, 3, 5, 7, 11, 13\} $$ and $$ B = \{1, 8, 27\} $$. Let $$ f $$ be a function from $$ A $$ to...

In a group of 250 students, the percentage of girls was at least 44% and at most 60%. The rest of the students were boys...

In a class of 100 students, 73 like coffee, 80 like tea, and 52 like lemonade. It may be possible that some students do ...