• 2022-06-07
    92 people travel together; 47 have brought bread,38 instant noodles,42 biscuits, 28 both bread and instant noodles, 31 both bread and biscuits, 26 both instant noodles and biscuits,and 25 have brought bread, instant noodles and biscuits. The rest all brought sandwiches – so how many brought sandwiches?
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