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题目 #13598

UUID
2cef9494-2870-4866-92e9-3efb43ca1a61
来源
A中考/2026江苏中考期末数学试卷+答案160.pdf 第 4 页,bbox [30.0, 517.3, 516.96, 752.27]
题型 / 学科
single_choice / math / JUNIOR
知识树
KT_JUNIOR_MATH_STANDARD
难度
难度 4 / 5 较难 · 跨知识点综合
QA 状态
存疑 / 待修复 重试 0 次,得分 0.950
最终题 ID
-
错误
发布失败: 正式发布门禁:选项内容为空: C,D

最终题干渲染(f_body 预览)

不透明袋子中仅有红、黄小球各一个, 两个小球除颜色外无其他差别,从中随机摸出一个小球 , 放回并摇匀, 再从中随机摸出一个小球, 则两次摸出的都是红球的概率是(           ).
A. \(\frac{1}{4}\frac{3}{3}\)
B. \(\frac{1}{2}\frac{4}{1}\)
C.
D.

答案 / 解析

答案(f_answer)

A

解析(f_ways)

袋子中有红球和黄球各一个,因此第一次摸到红球的概率为\(\frac{1}{2}\)。由于摸出后放回并摇匀,第二次摸到红球的概率同样为\(\frac{1}{2}\)。两次摸球为独立事件,因此两次都摸到红球的概率为\(\frac{1}{2} \times \frac{1}{2} = \frac{1}{4}\)。选项A表示\(\frac{1}{4}\),故选择A。

原图与资产(0)

该题没有裁出图片资产

审计记录

阶段审计器结果得分依据(简短)
STRUCTURE structure-rule PASS 0.900
FORMULA formula-auditor PASS 1.000
KNOWLEDGE knowledge-auditor WARN -
VISION vision-auditor PASS 1.000
SOLVER blind-solver PASS 1.000
CRITIC critic PASS 1.000
SYMBOLIC symbolic-auditor WARN 0.500
COHERENCE coherence-auditor FAIL 0.900
QUALITY_GATE quality-gate FAIL 0.950
SOLVER blind-solver PASS 1.000
CRITIC critic PASS 1.000
COHERENCE coherence-auditor PASS 1.000
SYMBOLIC symbolic-auditor PASS 1.000
AUTO_REPAIR_ATTEMPT answer-repair PASS 1.000
AUTO_REPAIR answer-repair PASS 1.000
VISION vision-auditor PASS 0.950
RETRO_REPAIR retro-deterministic FAIL 0.300
RETRO_REPAIR retro-deterministic FAIL 0.300
RETRO_REPAIR retro-deterministic FAIL 0.300
RETRO_REPAIR retro-deterministic FAIL 0.300
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知识点(0)

无

事件

时间阶段级别消息
2026-09-22 20:47:37PUBLISHERROR发布失败: 正式发布门禁:选项内容为空: C,D
2026-09-22 20:47:37QAINFOQA: PASS (score=0.950)
2026-09-22 20:45:27FORMULAWARN公式转换未确认,保留原文本: option_B
2026-09-22 20:44:35FORMULAWARN公式转换未确认,保留原文本: option_A