110 children choose their favourite colour from blue and pink.
Every student has to choose at least one colour, 60 children choose blue colour,
while 70 children choose pink colour.
How many children choose both colour as their favourite colour?
(Solve by Venn diagram method. )
Answers
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Venn diagram ⬆️⬆️⬆️
- Blue = 60
- Pink = 70
- Both = 20
- bcoz, 60 + 70 = 130
- than, 130 - 110 = 20
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