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Question 6066: Typed Observations, Event Occurrence, and First Hit

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0011-06066 · q-20261009-advance-20261013-r06-event-0091

Original question and givens

S=Fin(3)={0,…,2}; the event family is explicitly F=P(S). E=[1], ordered outcomes=[100, 2, 0]. Give (sample-eligibility mask, True/False/invalid-outcome occurrence list, first legal E hit’s zero-based index or none).

  • G001 — S=Fin(3)={0,…,2}; the event family is explicitly F=P(S). E=[1], ordered outcomes=[100, 2, 0]. Give (sample-eligibility mask, True/False/invalid-outcome occurrence list, first legal E hit’s zero-based index or none).

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

Step-by-step derivation

S001 · implies

Before

S=Fin(3)=[0, 1, 2];declared event model=full_powerset

After

finite S alone does not specify its event family or a probability law

Conditions: none

A finite sample space does not automatically choose F=P(S).Use the declared event family;set data alone give no probabilities,equiprobability or independence.

Step identifiers and dependencies

Rule: declared_finite_event_family · Uses: G001

S002 · implies

Before

observation position=0;candidate outcome=100;inside S=No

After

event occurrence=invalid sample

Conditions: none

First check whether the outcome lies in S,then event membership.An outside candidate is not assigned False occurrence;observation position and outcome value differ.

Step identifiers and dependencies

Rule: typed_event_occurrence_row · Uses: G001, S001

S003 · implies

Before

observation position=1;candidate outcome=2;inside S=Yes

After

event occurrence=False

Conditions: none

First check whether the outcome lies in S,then event membership.An outside candidate is not assigned False occurrence;observation position and outcome value differ.

Step identifiers and dependencies

Rule: typed_event_occurrence_row · Uses: G001, S002

S004 · implies

Before

observation position=2;candidate outcome=0;inside S=Yes

After

event occurrence=False

Conditions: none

First check whether the outcome lies in S,then event membership.An outside candidate is not assigned False occurrence;observation position and outcome value differ.

Step identifiers and dependencies

Rule: typed_event_occurrence_row · Uses: G001, S003

S005 · implies

Before

legal event hits among ordered candidates;E=[1]

After

first hit position=none

Conditions: none

Return the first0-based position of a legal E-hit in the ordered list;an empty list or no hit gives none,without invented observations.

Step identifiers and dependencies

Rule: first_legal_event_hit_position · Uses: G001, S004

Reverse checks

  • S005 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S004 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S003 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S002 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

([No, Yes, Yes], [invalid-outcome, False, False], none)

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: f4c9848ab7b2ecd0bc760b6306f1a3818dc82a3556762188c01835001505c6a2
  • candidate record SHA-256: ffa471ded8adf37ecf0a7a137329193824cf31bd39e567b73f75854894e88b60
  • semantic review receipt SHA-256: b9bbc1c947f477a9c4bb5a579368ac5265f2da4572ce612c30f3633ecaf4ae80
  • question-first witness SHA-256: 93f720df3ab3af13a792a3e6b443728e3c2a56276df839911f36569333236c55
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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