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Ymorist [56]
3 years ago
15

Keith asked 30 people whether they knew how to play whist or dominoes. Fifteen of them knoew how to play whist and 20 knew how t

o play dominoes. Five people did not know how to play either game. Create a Venn diagram to determine how many knew how to play both games.
Mathematics
1 answer:
adelina 88 [10]3 years ago
7 0
Ok so, 15 of them know how to play whist (I have no  idea what that is) and 20 of them know how to play dominoes, 5 of them do not. So, if you add up 20+15=35, take off 10 35-10=25 so it must mean that 10 is the answer. (Also if you add 5 to that 25+5=30)
The Answer is 10
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