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2)n*2=1
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256. 7^ 202µÄʮλÊýÊÇʲô?
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2)y=2x+5
3)y=2/15 *x
4)Y=x+1/2
5)Y=¸ùºÅ3 *x
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263. Data sufficiency ask x=?
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264. 12ÈËÌô6È˵ĿÉÄÜÐÔ±ÈÌô5È˵Ä
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267. N^4(ËĴη½£©±»16³ýÓà0£¬ÎÊN±»16³ýÓ༸£¿
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270. ÊýÁÐa1,a2,a3¡­¡­£¬a3=a2+a1,a4=a1+a2+a3,ÒÀ´ËÀàÍÆ£¬ an=p,ÎÊa(n+2)=£¿
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a(n)=p=X
a(n+1)=a(n)+X
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a(n+2)=a(n+1)+a(n)+X
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271. Ò»ËıßÐÎ,Á½¸öÖ±½Ç±ßΪ2,¶Ô½ÇΪ60,ÁíÁ½±ßÏàµÈ,ÇóÃæ»ý;
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272. 30!/10!±íʾÕûÊýÏà³Ë,×î´óÕûÊý30,ÎÊ×îСÕûÊý?
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274. Ò»ÌõÖ±Ïß,ÎÊбÂÊ? A. ÓëY= - 4 ƽÐÐ; B. Ö±ÏßÔÚ¢ó,¢ôÏóÏÞÎÞ½»µã(intersect)
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275. MΪСÓÚ50µÄÕûÊý(Ô­JJΪÁ½Î»Êý), ĩλΪ5,ÒÑÖªM^2,ÎÊM?
A. M^2ǧλΪ1;
B. M^2°ÙλΪ2.
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276. (C-D)/(C+D)=(C+D)/(C-D),ÎÊCÖµ?
A. D>C;
B. D>0
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