Probability question

Also joe you initially claimed it was an occurance problem. Meaning they essentially toss the purchased icecream back into the bin and randomly pull. Which in this case probability would remain the same after each purchase. I said the pribability would increase after each purchase and said I was wrong yet turn around and point out an increase probability.

Though I am not sure whether this answer is correct or not.

Krumple wrote:

I said the probability for finding the star would go up after every purchase and you said incorrect.

Here's what you wrote:

Quote:

Since you say every 50th has a star the average drops due to the incease in odds of obtaining the star stick after each consecutive purchase.

Clearly, you meant that the odds increase because the number of remaining choices decreases, as earlier in the same post you wrote:

Quote:

However if its random then you have 1 in 50 chance for the first purchase with a reduction by one each additional purchase.

(emphasis mine) In other words, there was a 1/50 chance for the first purchase, a 1/49 chance for the second, and so on. That, however, is not the situation in the problem posed in the original post, where the chance is always 1/50 for each purchase, which is why I noted that you were incorrect.

I never said it was 1/50 each perchase.