Where, 'O' Where Shall I Put You? Every answer is a two-word phrase in which the letter "O" is added at the end of the first word to make the second word. For example, given the clue "pack animal owned by Thomas Jefferson's first vice president," the answer would be "Burr burro."

## Where, 'O' Where Shall I Put You?

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Where, 'O' Where Shall I Put You?

# Where, 'O' Where Shall I Put You?

## Where, 'O' Where Shall I Put You?

• `<iframe src="https://www.npr.org/player/embed/162866860/162884762" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">`
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On-air challenge: Every answer is a two-word phrase in which the letter "O" is added at the end of the first word to make the second word. For example, given the clue "pack animal owned by Thomas Jefferson's first vice president," the answer would be "Burr burro."

Last week's challenge: Draw a regular hexagon and connect every pair of vertices except one. The pair you don't connect are not on opposite sides of the hexagon but along a shorter diagonal. How many triangles of any size are in this figure?