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Ipad Security Code

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To log into an IPad, a four-digit security code needs to be typed. The code can be digits 0 through 9 or lower case letters a through z. How many four-digit codes can be formed in total? Is it likely that someone who is not the owner of the IPad will guess the code?

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Solution Summary

The solution gives detailed steps on finding combination of Ipad security code. All steps are shown and explained.

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Solutions:
Since this is a four-digit code, we can image that there are 4 positions there.

For first position, we have choice from 10 digits and 26 letters, i.e., we have 36 choices. So there is 36 possible choice for 1st ...

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