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Tuesday, May 27, 2014

Brain Teaser 5/28/2014

1. Each of the Johnson brothers has as many sisters as he has brothers. Each of the Johnson sisters has twice as many brothers as she has sisters. How many brothers and sisters are there in the Johnson family?

2. Twenty-one birds are nesting in a tree. If a man shot into the tree and killed one-seventh of them, how many would remain?
Solution
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Kindle Fire HDX 8.9....

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