Bank of America customers select their own three-digit personal identification number (PIN) for use at ATMs.
(b) What is the probability Mr. Jones and Mrs. Smith select the same PIN?
(c) Which concept of probability did you use to answer (b)? Justify your answer

Question

Bank of America customers select their own three-digit personal identification number (PIN) for use at ATMs.
(b)	What is the probability Mr. Jones and Mrs. Smith select the same PIN?
(c)	Which concept of probability did you use to answer (b)? Justify your answer

alexwee123 · Answer

there are 1000 possible pins so what do you think the answer is?

anonymous · Answer

dun knw....

shane_b · Answer

Since you only have 3 digits available for PINs the range would be 000-999, which is 1000 possible pins as @alexwee123 said.

For two people to select the same pin, it would be:$$\frac{1}{1000}*\frac{1}{1000}=\frac{1}{1000000}$$So 1 in a million...

anonymous · Answer

thx....how about (c)

shane_b · Answer

I have no idea of what the concept is called...I just remember the math :)

anonymous · Answer

ok....thx...