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Math: 6÷2(1+2) = ?
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[quote:Anonymous Coward 1362610:MV8xNDczMDcwXzI0Mjc0NDE1X0M3RThCRkQz] [quote:ANNONYMOUS 1275893] Syrius, using the mult inverse is simply a more complicated method for solving a very simple problem. The answer either way is 1! [/quote] I thought so to at first but forgot that multiplication and division are at the same level, in which case you MUST work left to right. A common technique for remembering the order of operations is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction". This tells you the ranks of the operations: Parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). [b]When you have a bunch of operations of the same rank, you just operate from left to right. For instance, 15 ÷ 3 × 4 is not 15 ÷ 12, but is rather 5 × 4, because, going from left to right, you get to the division first.[/b] If you're not sure of this, test it in your calculator, which has been programmed with the Order of Operations hierarchy. http://www.purplemath.com/modules/orderops.htm I fell into the trap 9 is the only correct answer [/quote]
Alright, there's a lot of self-proclaimed experts around these parts. Let's see how your logic holds up against some basic mathematics.
6÷2(1+2) = ?
I'll give two hints. This is
a trick question, and there is only
All tools used for computation are fair game.
(Yes, I saw this somewhere else and decided to post it here.)
Best of luck to all you geniuses .
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