4个4不加括号,运用加减乘除符号算,只有64种可能的情况,每一种情况都不等于4：1:4＋4＋4＋4=162:4＋4＋4－4=83:4＋4＋4×4=244:4＋4＋4÷4=95:4＋4－4＋4=86:4＋4－4－4=07:4＋4－4×4=-88:4＋4－4÷4=79:4＋4×4＋4=2410:4＋4×4－4=1611:4＋4×4×4=6812:4＋4×4÷4=813:4＋4÷4＋4=914:4＋4÷4－4=115:4＋4÷4×4=816:4＋4÷4÷4=4.2517:4－4＋4＋4=818:4－4＋4－4=019:4－4＋4×4=1620:4－4＋4÷4=121:4－4－4＋4=022:4－4－4－4=-823:4－4－4×4=-1624:4－4－4÷4=-125:4－4×4＋4=-826:4－4×4－4=-1627:4－4×4×4=-6028:4－4×4÷4=029:4－4÷4＋4=730:4－4÷4－4=-131:4－4÷4×4=032:4－4÷4÷4=3.7533:4×4＋4＋4=2434:4×4＋4－4=1635:4×4＋4×4=3236:4×4＋4÷4=1737:4×4－4＋4=1638:4×4－4－4=839:4×4－4×4=040:4×4－4÷4=1541:4×4×4＋4=6842:4×4×4－4=6043:4×4×4×4=25644:4×4×4÷4=1645:4×4÷4＋4=846:4×4÷4－4=047:4×4÷4×4=1648:4×4÷4÷4=149:4÷4＋4＋4=950:4÷4＋4－4=151:4÷4＋4×4=1752:4÷4＋4÷4=253:4÷4－4＋4=154:4÷4－4－4=-755:4÷4－4×4=-1556:4÷4－4÷4=057:4÷4×4＋4=858:4÷4×4－4=059:4÷4×4×4=1660:4÷4×4÷4=161:4÷4÷4＋4=4.2562:4÷4÷4－4=-3.7563:4÷4÷4×4=164:4÷4÷4÷4=0.0625所以你的问题无解!