Because We COUNT!

#71

Sixty-three is a card game popular in Carleton County, New Brunswick, and is named after the number of points which can be taken in a hand. The game is similar to Pedro (card game), Pitch, and Euchre.

#72

The Black Eye Galaxy (aka Messier 64, M64, or NGC 4826) was discovered by Edward Pigott in March 1779, and independently by Johann Elert Bode in April of the same year, as well as by Charles Messier in 1780.

#73

I used to live in Louisville, KY where Interstate I -65 and I-64 meet.

#74

Route 66 is where I get my kick's!

#75

Sixty-seven is the 19th prime number.

#76

68 degrees Fahrenheit is the ideal temperature for developing black-and-white film

#77

69 is so awesome!!! Enough said

#78

- According to Jewish tradition, there are a core of 70 nations and 70 world languages.
- Seventy elders were assembled by Moses on God's command in the desert (Nu. 11:16-30)

#79

71 is a centered heptagonal number (A centered heptagonal number is a centered figurate number that represents a heptagon with a dot in the center and all other dots surrounding the center dot in successive heptagonal layers).

#80

Interested in forcasting the growth of your savings? Try using the Rule of 72! I used to teach this to new investment advisors all the time. Like them, you too may have you always wanted to be able to do compound interest problems in your head... (or not, unless you're a sociopath, but it is a very useful skill to have...imho). The rule of 72 gives you a quick estimate of how good (or not so good) a potential investment is likely to be.

The rule says that to find the number of years required to double your money at a given interest rate, you just divide the interest rate into 72. For example, if you want to know how long it will take to double your money at eight percent interest, divide 8 into 72 and get 9 years. Try doing the math on your calculator to see how close the estimate comes.(assume the interest is annually compounded, by the way.)

As you can see, the "rule" is remarkably accurate, as long as the interest rate is less than about twenty percent; at higher rates the error starts to become significant.

You can also run it backwards: if you want to double your money in six years, just divide 6 into 72 to find that it will require an interest rate of about 12 percent.

Granted, the rule of 72 is not as sexy as the rule of 69.... but it does come in handy every now and then...