C can see the hat of the man in front. But there is no turning back. I have to judge for myself. D can see the two people in front. If c himself is like the previous b. D will definitely tell the color of ABCD hat. But d didn't. I can see that you are not the same color as the person in front. He can see that the front is white. I can see that you are black.

Answer 2: dizzy. . . This seems to be the entrance exam for a cheating father in a kindergarten. . . Looks like c? The reason seems to be that A ruled it out first and couldn't see anything. B is the same. D You can see that the colors of the first two are different. But you can't be sure of yourself. C can see the front, and the people behind don't know the answer and don't talk. You should know that D sees two colors. Then the conclusion came out. Only C can tell others what color hat to wear.

Answer 3: C. Reason: First of all, D can see the most hats-two hats. If BC is the same color and D is another color, say it right away. In this problem, "after a while" is the key to solve the problem, because D didn't tell the color of his hat right away, so everyone (ABCD) knows that BC is not the same color, and C can see B, and the color is different from B, so the problem is solved.

This is all I can do for you.

What grade are you in?