Failure rate of condoms is 2-15% when 100 couples have sex regularly for a year. Does this mean that if a couple has sex 100 times in a year, using condoms each time, that there is a 2-15% chance that a pregnancy will occur?
https://www.verywellhealth.com/how-do-you-interpret-birth-control-failure-rates-906657
https://www.verywellhealth.com/how-do-you-interpret-birth-control-failure-rates-906657