That's right and demonstrates why I say solving depends on whether the regions are equal. Maybe the questioner intended you would assume that. But it is also possible that the intended point of the question is for you to realise that insufficient information has been given.

Bob

Insufficient data has been given. How do you know this?

]]>Bob

]]>Bob wrote:Correct if we assume the sections are equal in area. If this is not the case then it is not possible to determine the probability.

sologuitar wrote:Can you explain what you mean?

what would happen if one of the sections is, say, half of the wheel

In that case, the probability is 1/2.

]]>Correct if we assume the sections are equal in area. If this is not the case then it is not possible to determine the probability.

sologuitar wrote:

Can you explain what you mean?

what would happen if one of the sections is, say, half of the wheel

]]>Correct if we assume the sections are equal in area. If this is not the case then it is not possible to determine the probability.

B

Can you explain what you mean?

]]>B

]]>P(red section) = one red/(5 colors)

P(red section) = 1/5

You say?

]]>