Question

£¨±¾Ð¡ÌâÂú·Ö12·Ö£©
ij°àÈ«²¿ÃûѧÉúÔÚÒ»´Î°ÙÃײâÊÔÖУ¬³É¼¨È«²¿½éÓÚ13ÃëºÍ18ÃëÖ®¼ä¡£½«²âÊÔ½á¹û°´ÈçÏ·½Ê½·ÖΪÎå×飺µÚÒ»×é[13,14£©£»µÚ¶þ×é[14,15£©£»¡­£»µÚÎå×é[17,18]£¬±íÊÇ°´ÉÏÊö·Ö×鷽ʽµÃµ½µÄƵÂÊ·Ö²¼±í¡£

·Ö ×é	ƵÊý	ƵÂÊ
[13,14£©
[14,15£©
[15,16£©
[16,17£©
[17,18]

£¨1£©Çó¼°ÉϱíÖеĵÄÖµ£»
£¨2£©Éèm,nÊÇ´ÓµÚÒ»×é»òµÚÎå×éÖÐÈÎÒâ³éÈ¡µÄÁ½ÃûѧÉúµÄ°ÙÃײâÊԳɼ¨£¬Çóʼþ¡°¡±µÄ¸ÅÂÊ.

Answer 1

£¨1£©½â£ºÓɱíÖª£¬¡¡¡¡         ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­2·Ö£¬  ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­4·Ö
£¬.       ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­6·Ö
£¨2£©ÓÉÌâÖª£¬µÚÒ»×éÓÐ2Ãûͬѧ£¬ÉèΪ£¬µÚÎå×éÓÐ4Ãûͬѧ£¬ÉèΪ.
Ôò¿ÉÄܵĽá¹ûΪ:
¹²15ÖÖ£¬          ¡­¡­¡­¡­¡­¡­£¸·Ö
ÆäÖÐʹ³ÉÁ¢£º¹²8ÖÖ£¬               ¡­¡­¡­¡­¡­.. ¡­10 ·Ö
ËùÒÔ£¬ËùÇóʼþµÄ¸ÅÂÊΪ.                ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­12·Ö

ÂÔ