what is the probability of randomly meeting someone whose social security number ends in the same last digit as your SS#?

Question

anonymous · Answer

0.1

anonymous · Answer

I am confused why it is 1/10th and not 1/9th... nine numbers in a social right?

anonymous · Answer

no there can be 10 different digits possible for the last digit of the SSN, if 2 ppl hav d same..then only 1 event is favourable..only one numbr out of d ten..

anonymous · Answer

oh wow I was just looking at it all wrong... doesnt matter how many numbers are in the social... only that 0-9 are the only possible numbers for a single digit... thank you very much!

anonymous · Answer

yeah..now ur right