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shadowkatThis
made me scratch my head.
7 + 7 divided by 7 +7 x7 -7.
The correct answer is apparently 50.
IF you do it this way: 7+7 =14 divided by 7 =2
2 +7 = 9, 9* 7 =63, 63-7 = 56.
If you do it by calculator = 56
If you do it by Excel = 50
Apparently it is supposed to be 7x7= 49 /7 = 1, then 1+7+7 -7 = 8.
Which still makes no sense. So, it must be = 7x7/7 =1, then 7+7+7 =21 +1
Still makes no sense. I remain puzzled.
This is why I hate math.
Post by Power 95.3.
7 + 7 divided by 7 +7 x7 -7.
The correct answer is apparently 50.
IF you do it this way: 7+7 =14 divided by 7 =2
2 +7 = 9, 9* 7 =63, 63-7 = 56.
If you do it by calculator = 56
If you do it by Excel = 50
Apparently it is supposed to be 7x7= 49 /7 = 1, then 1+7+7 -7 = 8.
Which still makes no sense. So, it must be = 7x7/7 =1, then 7+7+7 =21 +1
Still makes no sense. I remain puzzled.
This is why I hate math.
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no subject
Date: 2014-06-28 09:52 pm (UTC)My second cousin on FB posted this link to "Order of Operations" = http://www.mathgoodies.com/lessons/vol7/order_operations.html
Just reading it gave me a headache. The rules are so arbitrary and don't make a heck of a lot sense.
I think the problem is most mathematicians think in concrete terms. My cousin for example (not the second-cousin), David, who is a nuclear physicist, can't really read novels - he just sees words on paper. But with math - he sees the equations in his head, they make sense. While you have to explain a mathematical equation to me, otherwise all it is is a bunch of meaningless symbols.