It took 21 years for this to happen, but our son Akiva can now do all the things the rest of us do without running afoul of any laws. To celebrate this milestone in our son's life, we've put together this geocache highlighting the importance of "21" in math, science, games and fun. Solve the clues and the cache is yours!
CACHE IS AT: N41 AB.CDE, W74 FG.HIJ
1. The number 21 appears in the Fibbonacci series. What is its position in the series? Divide this number by 2 to get A and B. (Clarification: Please use 1, and not 0, as the first term in the series.)
2. The 21st Ammendment, ratified in 1933, made the sale and consumption of alcohol legal in the United States. It repealed an earlier ammendment, ratified in 1918, which made the production and sale of alcohol illegal. Widely seen as unenforceable, this was the only ammendment to the US Constitution ever to be repealed. What number ammendment was this? The sum of the digits is C.
3. How many letters are there in the 21st element in the Periodic Table? Subtract 4 from this number to get D.
4. How many letters are there in the 21st letter of the Greek alphabet? This is E.
5. Shin is the 21st letter of the Hebrew alphabet. What is its numerical value? The second digit in this 3 digit number will give you F, and the 3rd digit gives you H.
6. What do you call a polygon with 21 sides? The sum of the digits in the number of letters in its name is G.
7. There is a pink and green granite mineral used as a gemstone whose name begins with the 21st letter of the alphabet. The number of letters in this mineral is I.
8. "Twenty One," also known as Blackjack, is a popular casino game. It probably originated in Spain, but rose to prominence in France in the 18th century. In this game the Ace can have either of 2 numerical values. The lower of these possible values is J.