A credit card contains 16 digits between 0 and 9. However, only 100 million numbers are valid. If a number is entered randomly, what is the probability that it is a valid number?
Amari Flowers 2020-10-20Answered
A credit card contains 16 digits between 0 and 9. However, only 100 million numbers are valid. If a number is entered randomly, what is the probability that it is a valid number?
There are strings of 16 digits between 0 and 9 (for each of the 16 digits we have 10 choices). Also, 100 million = . So, the probability that the random entered number is valid is
number of valid numbers/all strings of 16 digits=
which is almost zero.