c*********s
发帖数: 327 | 1 Part I
(you can't use paper, you have to figure it out in your head)
i have a black triangle, a white triangle, a black circle and a white circle
. if i gave you a shape (triangle or circle) and a color (black or white),
the "frobby" items would be those that had either the shape or the color,
but not both. that is, in order to be frobby, the item must be of the
specified color OR the specified shape, but not both the specified shape AND
the specified color. i'm thinking of a shape and a colo | J*******g
发帖数: 267 | 2 for the second question, i got the answer that we need to flip card 5 and
card F, is that correct?
for the first one, I found that black circle must be frobby while the
remaining two combinations cannot be frobby. tho I didnt do it in my head.
sigh...
circle
,
AND
i
frobbiness
【在 c*********s 的大作中提到】
: Part I
: (you can't use paper, you have to figure it out in your head)
: i have a black triangle, a white triangle, a black circle and a white circle
: . if i gave you a shape (triangle or circle) and a color (black or white),
: the "frobby" items would be those that had either the shape or the color,
: but not both. that is, in order to be frobby, the item must be of the
: specified color OR the specified shape, but not both the specified shape AND
: the specified color. i'm thinking of a shape and a colo
| c*********s
发帖数: 327 | 3 q2：
5 make sense, but why F, not E
【在 J*******g 的大作中提到】
: for the second question, i got the answer that we need to flip card 5 and
: card F, is that correct?
: for the first one, I found that black circle must be frobby while the
: remaining two combinations cannot be frobby. tho I didnt do it in my head.
: sigh...
:
: circle
: ,
: AND
: i
| S*********g
发帖数: 5298 | 4 逆否命题
【在 c*********s 的大作中提到】
: q2：
: 5 make sense, but why F, not E
| l******n
发帖数: 9344 | 5 1.black circle is frobby,others are not
2.5,F
circle
,
AND
i
frobbiness
【在 c*********s 的大作中提到】
: Part I
: (you can't use paper, you have to figure it out in your head)
: i have a black triangle, a white triangle, a black circle and a white circle
: . if i gave you a shape (triangle or circle) and a color (black or white),
: the "frobby" items would be those that had either the shape or the color,
: but not both. that is, in order to be frobby, the item must be of the
: specified color OR the specified shape, but not both the specified shape AND
: the specified color. i'm thinking of a shape and a colo
| d**********y
发帖数: 1 | 6 For 2, only one card: 5,
No need to flip either F or E,
The rule is about proving the back of odd number not back of a letter. | i*****e
发帖数: 68 | 7 You need to check if the other side of F is an odd number. If it is, the
rule would be rejected.
【在 d**********y 的大作中提到】
: For 2, only one card: 5,
: No need to flip either F or E,
: The rule is about proving the back of odd number not back of a letter.
| l*******o
发帖数: 78 | 8 Theese two are straightforwad logic questions. If you can not get them right
, time to look into other career paths. |
|
