答案文科
张掖市2022——2023学年高三年级第一次诊断考试数学试卷(文科)答案一、选择题:题号123456789101112答案BBCADDDCCABD二、填空题:13.14.215.16.10三、解答题:17.(1),,又所以数列是以4为首项以2为公比的等比数列.·······6分(2)由(1)可知,,..·······12分18.(1)对冰壶运动感兴趣的人数为人,女生中有人对冰壶运动没有兴趣,所以女生中有人对冰壶运动有兴趣,所以男生中有人对冰壶运动有兴趣,按性别用分层抽样的方法从对冰壶运动有兴趣的学生中,抽取人作为冰壶运动的宣传员,其中抽取的男生为人,女生为人,即男生选人,女生选人.······...
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