189. 18728-!-item-!-187;#058&011689
If the operation △ is one of the four arithmetic operations addition, subtraction, multiplication, and division,
is (6 △ 2) △ 4 = 6 △ (2 △ 4) ?
(1) 3 △ 2 > 3
(2) 3 △ 1 = 3
Ans. A
不太瞭解吔~
它不是說 one of the four arithmetic operations
可是 + or x 都可以,沒錯,二者都可以平衡,但這樣還可以算是嗎?
若不看答案,我是選 C,因為這樣才可求出唯一的 x,也才符合題目的 one 呀~
沒有一定固執自見,只想知道我那裏誤解了~