練習題庫/huikao・難度 3某車站的寄物櫃編號為 111 至 202020 的正整數。若系統選出所有使 x\sqrt{x}x 為整數的櫃號 xxx，則選出的櫃號集合為何？(A){4,9,16}\{4,9,16\}{4,9,16}(B){1,4,9,16}\{1,4,9,16\}{1,4,9,16}(C){0,1,4,9,16}\{0,1,4,9,16\}{0,1,4,9,16}登入後即可作答並查看完整詳解（每日免費 5 題）。