5个8加减乘除怎么等于20
5\u4e2a8\u52a0\u51cf\u4e58\u9664\u7b49\u4e8e58-(8+8+8)\u00f78=5
\u4f60\u597d\uff1a
5\uff0b5\u2014(5\uff0b5)\u00f75\uff1d8
5\uff0b(5\uff0b5\uff0b5)\u00f75\uff1d8
(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+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
2、如果加减乘除必须全部使用的话,无解。
3、如果可以使用乘方,有55个解:
(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)-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)-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
(88+8)/8+8=20
(88+8)÷8+8=20
绛旓細鍥炵瓟锛8/8*(8+8+8 )=24
绛旓細8脳锛8-8锛+ 8 / 8=1 8-8脳8 /锛8+8锛=4
绛旓細3. 绗笁涓〃杈惧紡锛18 - (64 - 8) 梅 8 = 18 - 56 梅 8 = 18 - 7 = 11锛堣繖涓粨鏋滀笌1涓嶇锛岃〃杈惧紡鏈夐敊璇級銆4. 绗洓涓〃杈惧紡锛(8 + 8) 梅 8 - 8 梅 8 = 16 梅 8 - 1 = 2 - 1 = 1銆5. 绗浜斾釜琛ㄨ揪寮忥細(8 - 64) 梅 8 + 8 = -56 梅 8 + 8 = -7 + 8...
绛旓細(88+8)/8+8=20
绛旓細(88+8)闄や互8+8 鍙兘杩欐牱锛屾病鍏跺畠鐨
绛旓細2. 濡傛灉鍔犲噺涔橀櫎蹇呴』鍏ㄩ儴浣跨敤锛屽苟涓旀暟瀛椾笉鑳介噸澶嶏紝鍒欐棤瑙c3. 濡傛灉鍙互浣跨敤涔樻柟锛屼互涓嬫槸閮ㄥ垎绗﹀悎瑕佹眰鐨勭畻寮忥細- (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 *...
绛旓細0+2+4+6+8=20
绛旓細(8-8)x8x8x8=0 8梅8+(8-8)x8=1 (8+8)梅8+8-8=2 (8+8)梅8+8梅8=3 (8+8+8+8)梅8=4 8-(8+8+8)梅8=5 (8x8-8-8)梅8=6 8-8梅8+8-8=7 8+(8-8)x8x8=8 8+8梅8+8-8=9 8+8梅8+8梅8=10
绛旓細(8-8)x8x8x8=0 8梅8+(8-8)x8=1 (8+8)梅8+8-8=2 (8+8)梅8+8梅8=3 (8+8+8+8)梅8=4 8-(8+8+8)梅8=5 (8x8-8-8)梅8=6 8-8梅8+8-8=7 8+(8-8)x8x8=8 8+8梅8+8-8=9 8+8梅8+8梅8=10
绛旓細8+8+8脳8梅8=24 8+8+8+8-8锛24