SOLUTION: Suppose Elaine has forgotten her person PIN number to her on-line checking account that contains five numbers or letters and they can repeat. If she types in a different arrangemen

Algebra ->  Permutations -> SOLUTION: Suppose Elaine has forgotten her person PIN number to her on-line checking account that contains five numbers or letters and they can repeat. If she types in a different arrangemen      Log On


   



Question 1080476: Suppose Elaine has forgotten her person PIN number to her on-line checking account that contains five numbers or letters and they can repeat. If she types in a different arrangement every 12 seconds, how long will it take her to try all the possible arrangements, to the nearest second?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
So each entry has 26%2B10=36 possible choices.
N=36%2A36%2A36%2A36%2A36=36%2A5=60466176
So then,
T=60466176%2812%29=725594112s
There are 315360 seconds in 1 year so,
T=725594112%2F315360
T=2300 years