By using the second condition, we conclude that there are 23 white roses in the tray.
How many white roses are in the tray?
First, we know that there are a total of 50 roses in the tray, and we have the conditions:
- "There is at least 1 red rose among any 24 randomly selected roses"
- "There is at least 1 white rose among any 28 randomly selected roses".
The second statement means that, always that we take 28 roses, at least one of them is white. So, there are 27 roses in the tray that are not white.
Whit that in mind, if the 28th rose must be white, then all the remaining roses in the tray are white, this means that there are:
50 - 27 = 23 white roses.
If you want to learn more about counting.
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