@Huckleberry @slh saw this in another thread, and we agreed it's impossible by recursion.

@douginamug
There being two identical answers is against the rules, but if we suppose there's only one answer, a, b, c or d, then you choosing at random makes your choice independent of the question, so it's 25% chance. The question doesn't imply you have to choose at random, but you'll have to choose a or d, which gives you a 50% chance of winning, better than random. Now I'm interested in your reasonning :)
@Huckleberry @slh

@roptat

A random one-in-four is 25%: correct-answer-1.

Since two answers are '25%', the chance of randomly selecting correct-answer-1 is actually 50%: correct-answer-2.

Since there is only one answer with '50%', the chance of selecting it randomly is 25%: correct-answer-3.

Since two answers are '25%', the chance of randomly selecting correct-answer-3 is actually 50%: correct-answer-4...

Reasoning hangs on definition of 'correct' I guess 😄

@Huckleberry @slh

@douginamug
So it's mostly a matter of defining "randomly choosing" an answer. To me it sounds like equiprobability of choosing one of the four answers. But they don't specify the distribution. I should have known better :p
@Huckleberry @slh

@douginamug @roptat @Huckleberry @slh It's actually only three choices 0%, 25% and 50% so it means 33% chance would be correct but as that is not an option.. all of them are wrong.

@slh
Eu responderia 50% (C).

O motivo para minha resposta é que das 4 (ABCD) possibilidades, 2 estão inválida (BD). Sobrando só (AC). E 1 certa em 2 possibilidades reais é 50% de chance (Escolho C).

Acertei?

@lunovox @slh
No entanto, D é o mesmo que A, não? Como um está correto e o outro errado?
Eu usei o Google Tradutor para isso 🙂

@moormaan @slh
Essa é uma questão que apenas uma alternativa está correta.
O q significa que se houver alternativas repetidas, então ESTATISTICAMENTE a opção redundante (D) não conta como possibilidade.

@lunovox @slh Eu não acho que a maioria das pessoas interpretará dessa maneira.

@slh I love it! Anyone knows whether it's real or if it's was just edited?

@moormaan Bom! Creio que só o @slh sabe a resposta correta! Embora possa haver a possibilidade do @tfardet está certo sobre este assunto

Sign in to participate in the conversation
Infosec Exchange

A Mastodon instance for info/cyber security-minded people.