Useless (but interesting) trivia

[lacanteen]

Sponsored

 

[HoosierDaddy]

so why not use a more rational metric of 1 meter square, or per prison regulation 2 meter square?

Maybe Kentucky doesn't have a city that big?

 

[Bikeman315]

 

[shogun32]

 

[FreePenguin]

Nooooooooooooooooooo

 

[Questortapes74]

In a galaxy not so far away, but long before there was a Death Star, there was Telstar. The world’s first artificial communication satellite that allowed telephone, television, and low resolution images to be transmitted through space across the Atlantic. The US, UK, and France were able to broadcast signals in order to augment information that was already available through the cumbersome landline system that was already in place. With the Telstar, the world got a little smaller...

 

[lacanteen]

 

[ctandc72]

back when airplanes were designed for pilots and not generals.

Anyone who has ever been on the ground when a Warthog has laid it down - will never forget the experience. The old joke back then "You know how to tell who all the Catholics are?" - "They are the ones crossing themselves when the Warthog comes in."

Of course when you design a plane AROUND the main gun - that's what you get.

 

[lacanteen]

 

[Norm Peterson]

If a number is divisible by 9, the sum of all its digits is also divisible by 9. Try it.

9, 18, 27, 81, 108, 927, etc.

There is a quick and dirty check that works for addition, subtraction, and multiplication that's based on the number 9.

Add the digits in each input number up and write it down. Do the same for your answer. If the sum exceeds 9, add those digits up and write that down. Do the original problem's math with the reduced numbers. The reduced number math should match the reduced answer number. This picks up most careless-math errors.

2175 . . . 15 . . . 6
202 . . . . . . .. 4
786 . . . 21 . . . 3
------------------ 13 . . . 4
3163 . . . 13 . . . . . . . 4


I had a 5th or 6th grade teacher who taught that.


Norm

 

[shogun32]

I had a 5th or 6th grade teacher who taught that.

but did she teach you the Theorem and have you work out the mathematical proof?

 

[Norm Peterson]

No. This teacher was not a theoretician. Just a very practical-minded individual dedicated to teaching who had somehow stumbled across that little gem. This was probably 6th grade (my 1958-1959 school year).


Norm

 

[shogun32]

No. This teacher was not a theoretician. Just a very practical-minded individual dedicated to teaching who had somehow stumbled across that little gem. This was probably 6th grade (my 1958-1959 school year).

it was a joke, my good man. But back then you actually got an education when you want to school... I failed a math class in college because it was all about theorem and proofs and I never really grok'd it. Give me trig or linear algebra all day long. Just not proofs.

 

[lacanteen]

 

[lacanteen]

Sponsored