Question

5£®ÌðÍ㶹µÄ»¨É«ÓÉÁ½¶ÔµÈλ»ùÒò£¨AºÍa¡¢BºÍb£©¹²Í¬¿ØÖÆ£¬ÆäÏÔÐÔ»ùÒò¾ö¶¨»¨É«µÄ¹ý³ÌÈçͼËùʾ£¬Çë¾Ýͼ»Ø´ð£º

£¨1£©¢Ù¹ý³Ì³ÆΪ»ùÒòµÄ±í´ï£¬Í¼ÖÐÏÔʾÁË»ùÒòͨ¹ý¿ØÖÆø£¨µ°°×ÖÊ£©µÄºÏ³ÉÀ´¿ØÖÆ´úл¹ý³Ì£¬½ø¶ø¿ØÖÆÉúÎïÌåµÄÐÔ×´£®
£¨2£©AaBbµÄ×Ï»¨ÌðÍ㶹×Ô½»£¬ºó´úÖÐ×Ï»¨ºÍ°×»¨ÌðÍ㶹µÄÊýÁ¿±ÈΪ9£º7£®
£¨3£©ÌðÍ㶹»¨É«µÄ×Ï»¨ºÍ°×»¨ÊÇÒ»¶ÔÏà¶ÔÐÔ×´£¬¿ØÖÆ»¨É«»ùÒòµÄÒÅ´«·ûºÏ£¨Ìî¡°·ûºÏ¡±»ò¡°²»·ûºÏ¡±£©»ùÒòµÄ×ÔÓÉ×éºÏ¶¨ÂÉ£¬ÀíÓÉÊÇÁ½¶Ô»ùÒòλÓÚ·ÇͬԴȾɫÌåÉÏ£®

Answer 1

·ÖÎö £¨1£©ÌðÍ㶹»¨É«ÊÜÁ½¶Ô»ùÒò¿ØÖÆ£¬»ùÒòA¿ØÖÆøAºÏ³É£¬´Ó¶ø½«°×É«µÄÇ°ÌåÎïÖÊת»¯³É°×É«µÄÖмäÎïÖÊ£¬»ùÒòB¿ØÖÆøBµÄºÏ³É£¬´Ó¶ø½«°×É«ÖмäÎïÖÊת»¯Îª×ÏÉ«ËØ£¬ÔòA_B_±íÏÖΪ×ÏÉ«£¬ÆäÓà»ùÒòÐͶ¼ÊÇ°×É«£®
£¨2£©»ùÒò¶ÔÐÔ×´µÄ¿ØÖÆÓÐÁ½ÖÖÀàÐÍ£º
¢Ù»ùÒòͨ¹ý¿ØÖÆøµÄºÏ³ÉÀ´¿ØÖÆ´úл¹ý³Ì£¬½ø¶ø¿ØÖÆÉúÎïµÄÐÔ×´£»
¢Ú»ùÒòͨ¹ý¿ØÖƵ°°×Öʽṹ£¬¿ØÖÆÉúÎïµÄÐÔ×´£®

½â´ð ½â£º£¨1£©£©¢Ù¹ý³Ì³ÆΪ»ùÒòµÄ±í´ï£¬Í¼ÖÐÏÔʾÁË»ùÒòͨ¹ý¿ØÖÆøµÄºÏ³ÉÀ´¿ØÖÆ´úл¹ý³Ì£¬½ø¶ø¿ØÖÆÉúÎïÌåµÄÐÔ×´£®
£¨2£©AaBbµÄ×Ï»¨ÌðÍ㶹×Ô½»£¬ºó´úÖÐ×Ï»¨£¨A_B_£©Õ¼$\frac{3}{4}¡Á\frac{3}{4}=\frac{9}{16}$£¬¹Êºó´ú×Ï»¨Óë°×»¨ÌðÍ㶹µÄÊýÁ¿±ÈΪ9£º7£®
£¨3£©ÌðÍ㶹»¨É«µÄ×Ï»¨ºÍ°×»¨ÊÇÒ»¶ÔÏà¶ÔÐÔ×´£¬¿ØÖÆ»¨É«»ùÒòµÄÒÅ´«·ûºÏ»ùÒòµÄ»ùÒòµÄ×ÔÓÉ×éºÏ¶¨ÂÉ£¬ÒòΪÁ½¶Ô»ùÒòλÓÚ·ÇͬԴȾɫÌåÉÏ£®
¹Ê´ð°¸Îª£º
£¨1£©±í´ï    Ã¸£¨µ°°×ÖÊ£©   
£¨2£©9£º7
£¨3£©Ïà¶ÔÐÔ×´   ·ûºÏ    Á½¶Ô»ùÒòλÓÚ·ÇͬԴȾɫÌåÉÏ

µãÆÀ ±¾Ì⿼²é»ùÒòµÄ×ÔÓÉ×éºÏ¹æÂɵÄʵÖʼ°Ó¦ÓÃÏà¹Ø֪ʶµã£¬ÒâÔÚ¿¼²éѧÉú¶ÔËùѧ֪ʶµÄÀí½âÓëÕÆÎճ̶ȣ¬ÅàÑøѧÉú·ÖÎöͼÐΡ¢»ñÈ¡ÐÅÏ¢¼°Ô¤²â»ùÒòÐͺͱíÏÖÐÍÒÔ¼°¸ÅÂʼÆËãµÄÄÜÁ¦£®