5个8加减乘除怎么等于20
1. 经过改写和验证,以下是一些符合要求的算式:- (5 + 5 - 5) * 5 - 5 = 20
- (5 + 5) * (5 + 5) / 5 = 20
- 5 + 5 * 5 - (5 + 5) = 20
- 5 + 5 * 5 - 5 - 5 = 20
- (5 + 5) / 5 * (5 + 5) = 20
- (5 + 5) / (5 / (5 + 5)) = 20
- 5 - (5 + 5) + 5 * 5 = 20
- 5 - (5 + 5 - 5 * 5) = 20
- 5 - 5 + 5 * 5 - 5 = 20
- (5 - 5 + 5) * 5 - 5 = 20
- 5 - 5 - 5 + 5 * 5 = 20
- 5 - 5 - (5 - 5 * 5) = 20
- 5 - (5 - 5 * 5) - 5 = 20
- (5 - (5 - 5)) * 5 - 5 = 20
- 5 - (5 - (5 * 5 - 5)) = 20
- 5 * 5 + 5 - (5 + 5) = 20
- 5 * 5 + 5 - 5 - 5 = 20
- 5 * (5 + 5 - 5) - 5 = 20
- 5 * 5 - (5 + 5) + 5 = 20
- 5 * 5 - 5 + 5 - 5 = 20
- 5 * 5 - 5 - 5 + 5 = 20
- 5 * 5 - (5 - 5 + 5) = 20
- 5 * 5 - (5 - 5) - 5 = 20
- (5 - 5) * 5 - 5 = 20
- 5 * 5 - 5 / 5 * 5 = 20
- (5 * 5 - 5) * 5 / 5 = 20
- 5 * 5 - 5 / 5 * 5 = 20
- 5 / 5 * 5 * 5 - 5 = 20
- 5 / 5 * (5 * 5 - 5) = 20
2. 如果加减乘除必须全部使用,并且数字不能重复,则无解。
3. 如果可以使用乘方,以下是部分符合要求的算式:
- (5 + 5 - 5) * 5 - 5 = 20
- (5 + 5) * (5 + 5) / 5 = 20
- 5 + 5 * 5 - (5 + 5) = 20
- 5 + 5 * 5 - 5 - 5 = 20
- (5 + 5) / 5 * (5 + 5) = 20
- (5 + 5) / (5 / (5 + 5)) = 20
- 5 - (5 + 5) + 5 * 5 = 20
- 5 - (5 + 5 - 5 * 5) = 20
- ...(更多算式)
请注意,以上算式仅为部分示例,实际上有更多的组合可以满足条件。
绛旓細1銆佷娇鐢ㄥ姞鍑忎箻闄ゃ佹嫭鍙风殑璇濓紝鏈45涓畻寮忥細(5+5-5)*5-5=20锛(5+5)*(5+5)/5=20锛5+5*5-(5+5)=20锛5+5*5-5-5=20 (5+5)/5*(5+5)=20锛(5+5)/(5/(5+5))=20锛5-(5+5)+5*5=20锛5-(5+5-5*5)=20 5-5+5*5-5=20锛(5-5+5)*5-5=20锛5-5-5+5*5=...
绛旓細锛88锛8锛夛紡8锛8锛20
绛旓細锛8+8+8+8锛-8鐨勫紑绔嬫柟
绛旓細88梅8+8梅8銆傞棶棰樹腑璇5涓8鍔犲噺涔橀櫎锛屽彧瑕佹槸5涓8灏卞彲浠ワ紝鍥犳灏辩粍鎴88梅8+8梅8锛屽厛绠椾箻闄ゅ悗绠楀姞鍑忥紝鎵浠88梅8+8梅8=11+1=12銆
绛旓細5涓8鍔犲噺涔橀櫎绛変簬3鐨勭畻娉曪細8梅8锛(8锛8)梅8=3 璁$畻杩囩▼锛氬厛绠椾箻闄わ紝鍚庣畻鍔犲噺銆傛湁鎷彿鏃讹紝鍏堢畻鎷彿閲岄潰鐨勶紝鍐嶇畻鎷彿澶栭潰鐨勩傚洜姝わ細8梅8锛(8锛8)梅8=1+16梅8=1+2=3
绛旓細灏嗕箻绉櫎浠ュ彟澶栦袱涓8鐨勫拰锛64 梅 (8 + 8) = 4銆5. 鏈鍚庯紝鍏堝皢鍏朵腑涓涓8闄や互鍙︿竴涓8寰楀埌1锛屽啀鍔犱笂鍙︿竴涓8闄や互8寰楀埌1锛屽皢杩欎袱涓粨鏋滅浉鍔犲緱鍒2銆6. 鐒跺悗锛屽皢5涓8鐩稿姞寰楀埌40锛屽啀闄や互2寰楀埌20锛屾渶鍚庡皢20闄や互2寰楀埌4銆傞氳繃浠ヤ笂姝ラ锛屾垜浠彲浠ュ緱鍑猴紝浣跨敤鍔犲噺涔橀櫎杩愮畻锛浜斾釜8纭疄鍙互寰楀埌缁撴灉4銆
绛旓細1. 棣栧厛锛屽皾璇曞湪浜斾釜8涔嬮棿娣诲姞鍔犲彿銆佸噺鍙枫佷箻鍙锋垨闄ゅ彿锛屼互褰㈡垚涓涓暟瀛﹁〃杈惧紡銆2. 鎺ョ潃锛岃绠楄繖涓〃杈惧紡鐨勭粨鏋滐紝鐪嬫槸鍚绛変簬5銆3. 鍦ㄨ繖涓壒瀹氱殑闂涓紝闇瑕佹壘鍒颁竴涓〃杈惧紡锛屼娇寰椾簲涓8閫氳繃鍔犲噺涔橀櫎鍚庣殑缁撴灉涓5銆4. 缁忚繃灏濊瘯鍜岃绠楋紝鍙戠幇涓涓彲鑳界殑瑙f槸锛8 - (8 + 8 + 8) 梅 8 = 5銆5. ...
绛旓細锛8+8锛壝8-锛8梅8)=1 锛8+8锛壝8+锛8-8锛=2 锛8+8锛壝8+锛8梅8锛=3 锛8+8+8+8锛壝8=4 8-(8+8+8)梅8=5
绛旓細鈭(8*8)+8-8/8=15 鎴 (8*8-8)/8+8=15
绛旓細(8+8)梅8+8-8=2