Question: what does a 1 in 20 chance mean?
Answer: A 100% chance or probability of the 1 event happening could be expressed as 1/1 or 100/100 and 1 chance in 20 attempts could be expressed as 5 chances in 100 attempts, 5 times as many chances in 5 times as many attempts. So, the percentage of a 1 in 20 chance of something happening is 5%. 673 views.