Counter-example???I hope not!!
Is the integer n = 2 1 0 ( 2 1 1 − 1 ) not a perfect number??
Hint: 2 1 1 − 1 = 2 3 ∗ 8 9
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2 solutions
I totally missed the part where you said "Is the integer 2 1 0 ( 2 1 1 − 1 ) not a perfect number?" Argh!
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Oh and the multiplication symbol looks more like a decimal point.
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Exactly, it doesn't look, it is a decimal point, I requested a clarification. You should edit the problem
Fixed!!
I knew the answer, but got it wrong because it wasn't clearly phrased!
The question seemed it was saying it a perfect number but I read the question and it said ^not power and so U answered no.
the correct ans should be NO.
Come on!!! you could have phrased the problem more clearly, but I guess I am to blame for not reading the problem properly
The language of the question. Arghhhh. :P
Wonderfully phrased! :D I really love questions which are trickily phrased. And, thanks for taking my rating up to 1900 :)
The options are wrong.... I want my ratings back. @Calvin Lin and @Eddie The Head Please look into the matter...
Option (A) says, "No, they are not perfect"
Option (B) says, "Yes, they are not perfect"
Option (C) says, "Maybe they are perfect"
Thus, as you can see, there is an ambiguity in the options. Please change them and give me my ratings back...
Thanks
I also thought that the symbol at place of multiplication is decimal point and got the question wrong! Please change it or most of others will get the question wrong and will do same mistake as others.
Solution Outline:
Since 2 1 1 − 1 = 2 3 ∗ 8 9 this does not fall within the theorem proved in the last note and hence it is not a perfect number.It can also be shown manually.