[問題] gwd-tt math7
Q15:
Which of the following fractions has a decimal equivalent that is a
terminating decimal?
A. 10/189
B. 15/196
C. 16/225
D. 25/144
E. 39/128
答案是(E)
想問大家的是: 這種題目有技巧可以馬上知道答案嗎? 還是要一個一個算@@
謝謝~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.115.220.230
推
12/01 18:43, , 1F
12/01 18:43, 1F
推
12/01 22:34, , 2F
12/01 22:34, 2F