How many four-character license plates consist of a consonant, followed by a vowel, followed by a consonant, and then a digit? (For this problem, consider Y a vowel.)

LOL314jnl  Feb 1, 2018

If we allow for repeats....we have


20 consonants to choose from to fill the first position

6 vowels to choose from for the second position

20 consonants to choose from  for the third position

10 digits to choose from for the last position



So....the number of possible plates is


20 * 6 * 20 * 10   =





cool cool cool

CPhill  Feb 1, 2018

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