PandaMan
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 Sep 28 awarded Popular Question May 24 awarded Popular Question May 1 awarded Yearling Feb 26 comment Poker dice probability of rolling 2 pairs thank you!!!!!!! Feb 26 asked Poker dice probability of rolling 2 pairs Jan 24 awarded Self-Learner Jan 18 awarded Nice Question Oct 6 asked The quantile function $F^{-1}(p) = c$ for all $p$ in the interval $(p_0, p_1)$ has the condition that $Pr(X=c) = p_1 - p_0$ Sep 23 comment Show that every proper subgroup of this group is finite. @Denis I see what you mean, in that case then I don't quite know where to start. Sep 23 asked Show that every proper subgroup of this group is finite. Sep 17 awarded Notable Question Sep 2 accepted Show that the collection of all subsets of a finite sample space satisfies the 3 conditions to be called a collection of events. Sep 2 comment Show that the collection of all subsets of a finite sample space satisfies the 3 conditions to be called a collection of events. I think I'm confused with the difference of $S$ and the collection of all subsets of $S$. Say if $S = \{1,2\}$, then the collection of all subsets of $S$ will be $\{\emptyset\}, \{1\}, \{2\}, \{1,2\}$ right? If I let $A = \{1\}$, then what does $A^c$ look like? $A^c=\{2\}$ or $A^c=\{\emptyset\}, \{2\}, \{1,2\}$? @Dilip Sarwate as well. Thanks you guys in advance! Sep 2 asked Show that the collection of all subsets of a finite sample space satisfies the 3 conditions to be called a collection of events. Aug 13 accepted Given $P$ idempotent, show that $I-P$ is idempotent. Aug 12 comment Given $P$ idempotent, show that $I-P$ is idempotent. thanks a lot!!!! Aug 12 comment Given $P$ idempotent, show that $I-P$ is idempotent. thanks! after a long summer I forgot whether if matrices could be multiplied out or not... Aug 12 asked Given $P$ idempotent, show that $I-P$ is idempotent. Jul 2 awarded Curious May 13 comment Do there exist $a_k$ and $b_k$ so the equation $\sum\limits_{k=1}^{n} (a_k \sin(kx) + b_k \cos(kx)) = 0$ has no roots? thanks @Goos and @sos440!!!