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Abel, Mabel, and Caleb went bird watching. Each of them saw one bird that none of the others did.
Each pair saw one bird that the third did not.
And one bird was seen by all three.
Of the birds Abel saw, two were yellow.
Of the birds Mabel saw, three were yellow.
Of the birds Caleb saw, four were yellow.
How many yellow birds were seen in all?
PM answers please.
Each pair saw one bird that the third did not.
And one bird was seen by all three.
Of the birds Abel saw, two were yellow.
Of the birds Mabel saw, three were yellow.
Of the birds Caleb saw, four were yellow.
How many yellow birds were seen in all?
PM answers please.
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