PP- T2- DS Q95

[小花]

95. 8829-!-item-!-187;#058&006700
If v and w are different integers, does v = 0 ?

(1) vw= v^2

(2) w = 2


ANS :A
很像OG的題目
但是忘了怎們解

[Huang Hsin-Yi]

(1) v可由+,-,o 三方面考慮
if v = + or -實數 則w=v which can satisfy vw=v^2, however , we know v and w are different
integers, therefore , we conclude v=o

(2) we cannot know about v, if we only know w

[小花]

我沒考慮到V=0
謝謝