The seventy-fifth Wildclickers' Migratory Stroll

Seventy-five
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In mathematics:

As the sum of the first five pentagonal numbers, seventy-five is a pentagonal pyramidal number. It is also an enneagonal number.

It is also a Keith number, because it recurs in a Fibonacci-like sequence started from its base 10 digits: 7, 5, 12, 17, 29, 46, 75... But there is no integer that added up to its own digits adds up to 75, hence 75 is a self number.

There are 75 uniform polyhedra.

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Seventy-five is also:

* The atomic number of rhenium
* The age limit for Canadian senators
* The designation of Interstate 75, a freeway that runs from Florida to Michigan.
* The registry of the U.S. Navy's nuclear aircraft carrier USS Harry S. Truman (CVN-75), named after U.S. President Harry S. Truman.
* The record for most game show wins, held by Ian Lygo. Also, the record for most game show appearances, currently a tie between Lygo and Ken Jennings.
* The year AD 75, 75 BC, or 1975.
* A common speed limit, in terms of miles per hour, in the western United States.
* Sweet 75, a band.
* The beginning of all 5 digit Paris Postal Codes (Not suburbs).

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This is the SEVENTY-FIFTH WildClickers thread - where we discuss topics of interest (sometimes environmental/ecological, sometimes general friendly banter), and check in on our daily clicks. The WildClickers have saved over SIXTY ACRES of land (rainforest, marine wetlands and prairie) around the world.

Please join us in daily clicking for the Rainforest (and other worthy causes), and become a part of our cordial group on this Rainforest thread.

We are the aktbird57 team in Race for the Rainforest, and we are the number ONE team in the world!

Please help! Go to the Race for the Rain Forest at Care2.com. Just click on a button and somewhere in the world, you'll save a lot of square feet of rain forest, prairie, or wetlands, -- you choose! Corporate sponsors show their logos when you click, and in return, they pay for the habitat saved.

Just click: http://rainforest.care2.com/welcome?w=856730509

To register for the first time, create your own Distinct Log-in name and Password. Then each time you visit the site to click you simply Log-in and click on the Rainforest button. It's that simple. The site is FREE. If you have a question, we have plenty of answers. FREE.

After clicking, feel free to post on this thread. We have the most wonderful and helpful group of people clicking here. Any time you can't click, we can arrange for a substitute to click for you.