fix: replace .chinese.md extension with .md
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---
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id: 5900f3891000cf542c50fe9c
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challengeType: 5
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title: 'Problem 29: Distinct powers'
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videoUrl: ''
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localeTitle: 问题29:不同的权力
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---
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## Description
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<section id="description">
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考虑2≤a≤5和2≤b≤5的ab的所有整数组合:
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22 = 4、23 = 8、24 = 16、25 = 32
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32 = 9、33 = 27、34 = 81、35 = 243
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42 = 16、43 = 64、44 = 256、45 = 1024
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52 = 25、53 = 125、54 = 625、55 = 3125
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如果然后按数字顺序放置它们,并删除所有重复项,则会得到以下15个不同术语的序列:
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4,8,9,16,25,27,32,64,81,125,243,256,625,1024,3125
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对于2≤a≤n和2≤b≤n,由ab生成的序列中有多少个不同的项?
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</section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>distinctPowers(15)</code>应该返回177。
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testString: assert.strictEqual(distinctPowers(15), 177);
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- text: <code>distinctPowers(20)</code>应该返回324。
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testString: assert.strictEqual(distinctPowers(20), 324);
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- text: <code>distinctPowers(25)</code>应该返回519。
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testString: assert.strictEqual(distinctPowers(25), 519);
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- text: <code>distinctPowers(30)</code>应该返回755。
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testString: assert.strictEqual(distinctPowers(30), 755);
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function distinctPowers(n) {
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// Good luck!
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return n;
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}
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distinctPowers(30);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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/section>
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