任取一个正整数,若是奇数,就将该数乘3再加上1;若是偶数,就将该数除以2,反复进行上述两种运算,经过有限次步骤后,必进入循环圈1→4→2→1.这就是数学史上著名的“冰雹猜想”(又称“角谷猜想”).若取正整数
,根据上述运算法则得出6→3→10→5→16→8→4→2→1,共需经过8个步骤变成1(简称为8步“雹程”)当
时,需要多少步“雹程”?( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3967d620e2fef3ecc724c66e29f68a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461c0e1e474df8236f21dec4362dbef1.png)
A.11 | B.12 | C.13 | D.14 |
更新时间:2022-02-05 16:24:51
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【推荐2】将石子摆成如图的梯形形状,各图中的石子数5,9,14,…依次构成数列
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A.![]() | B.![]() | C.![]() | D.![]() |
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