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Najib Idrissi
7:37 AM
delete
math.stackexchange.com/questions/1161982/…
Be careful that it's already been deleted, if possible I'd rather avoid another debate about "cycles"
3 hours later…
Najib Idrissi
10:55 AM
←
3 messages moved from
Reopen? Undelete? Close? Delete?
1 hour later…
SmokeDetector
12:18 PM
[
SmokeDetector
] Phone number detected:
If $Σ(2009-r)cos(2πr/2009)=-n/2$ ($1<=r<=2008$) then the digits in the unit's place of $(9417709487)^n$ must be equal to
by
Sanchayan Dutta
on
math.stackexchange.com
2 hours later…
SmokeDetector
2:31 PM
[
SmokeDetector
] Phone number detected:
Determining which number lies in sequence $1234567891011…$ on the $10^{100005}$'th position
by
qiubit
on
math.stackexchange.com
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