29) E

Probability of it being yellow or blue = 70%
P(yellow) = 70/3%
P(blue) = 140/3%
We can say that there are 3 red, 7/3 yellow and 14/3 blue. However, we need whole numbers.
If we multiply all of these by 3, we get the following numbers: 9 red, 7 yellow and 14 blue. This adds up to 30.

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