A probability problem by Saswata Naha
Probability
Level
2
A license plate has 3 letters and 3 digits in that order. A witness to a hit and run accident saw the first 2 letters and the last digit. If the letters and digits can be repeated, how many license plates must be checked by the police to find the culprit?
The answer is 2600.
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1 solution
26 possible letters, times 10 possible first digits, times 10 possible second digits = 2 6 0 0