1. There are 16 balloons in a room. Two balloons are coloured violet, two are coloured indigo, two
are coloured blue, two are coloured green, two are coloured yellow, two are coloured orange, two
are coloured red and two are coloured black. A person randomly starts removing balloons from the
room. What is the minimum number of balloons he needs to remove from the room to ensure that
he has a got at least one pair of balloons having the same colour.
03
09
O 15
O Cannot be determined
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Answer:
The answer is 9
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