There are 369 cards in the box.
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.
Given
p(red colour) = 1/3
p(blue colour) = 1-1/3 = 2/3
p(blue card) = no.of blue cards/ Total cards
2/3 = 246/ Total cards
Total cards = 246/2/3 = 369
p(red card) = red cards/Total cards
1/3 = red cards/ 369
red cards = 123
To learn more about probability refer to:
https://brainly.com/question/13604758
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