-2,0,6,16,30, ( ),70。A. 47 B. 48 C. 49 D. 50

作者: tihaiku 人气: - 评论: 0

问题 -2,0,6,16,30, ( ),70。

选项 A. 47 B. 48 C. 49 D. 50

答案 B

解析多级数列。后项减前项依次得2，6，10，14，(x－30),(70－x）。猜测本题属于二級等差数列，解得x=48。符合验证，故本题选B。

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消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.

文件: /twcms/kongphp/cache/cache_redis.class.php

位置: 第 85 行

<?php echo 'KongPHP, Road to Jane.'; ?>

-2,0,6,16,30, ( ),70。A. 47 B. 48 C. 49 D. 50

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