Question
A group of pupils took part in a survey to vote for their favourite sport. Each pupil voted for only 1 type of sport: basketball, rugby or floorball. 56 of them voted for either basketball or rugby. 27 of them for either rugby or floorball. 45 of them voted for rugby. How many pupils took part in the survey?
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A group of pupils took part in a survey to vote for their favourite sport. Each pupil voted for only 1 type of sport: basketball, rugby or floorball. 56 of them voted for either basketball or rugby. 27 of them for either rugby or floorball. 45 of them voted for rugby. How many pupils took part in the survey?