Thread: Who can find an answer different than 7.

Originally Posted by Wongo

What's so special with -10?

its ten less than zero

I use to be good at maths. Now my brain hurts.

I am all confused but I have just returned home from the pub. -10 still gives a result of 7.

Think of a number.............. -10

Add Ten.................. -10 + 10 = 0

Double the result............. 0 x 0 = 0

Subtract 6................ 0 -6 = -6

Divide by 2.................... -6 / 2 = -3

Take away the first number you thought of......... -3 -(-10) = 7


Why is minus 10 special, the answer is still 7

Mind you, try it with pi

Originally Posted by Wongo

What's so special with -10?

Originally Posted by switt775

Simple. Make a mistake. (but only 1. If you make 2 mistakes, they might cancel each other out, and you'll accidently get the correct answer.)

pi , well done, no doubling a never ending decimial , though the -10 got a few

Originally Posted by jow104

i.e. how can you lay down minus ten pieces and then carry on the clculation?

Think of a thermometer with plus degrees and minus degrees, or a uni some degrees are a plus and some arn't

Originally Posted by Ashore

pi , well done, no doubling a never ending decimial

Oh? 2 x 1/3 = 2/3 or, in decimal, 2 x 0.333... = 0.666... no problems there apart from writing them out in full.

Come to that, every real number can be expressed as a "never-ending" decimal. eg. 1 is more accurately expressed as 1.000... and you have no problems doubling that, do you?

though the -10 got a few

Originally Posted by Ashore

Think of a thermometer with plus degrees and minus degrees, or a uni some degrees are a plus and some arn't

Unsatisfactory solution. I want to see it in the real.

John,

Perhaps if you consider the planet earth (proper way up). Imagine the Equator is zero and everything North of it as negative, everything South as positive.

Are you real only when you are in Australia?

Originally Posted by jow104

Unsatisfactory solution. I want to see it in the real.

Well if 10 people go to Uni in england and get an Engineering Degree thats a plus , but if 10 go and get an Arts Degree with a major in flower pressing, then thats a minus (as well as to thier parents bank account and a loss of 4-5 years of their life,) yeah well if your a bloke you could proberly still play for england but its still a minus

Love Australia, only the UK beats it.

Yeah but what about all the Poms over there?