How many different 7-place license plates are possible if the first 2 places are for letters and the other 5 for numbers? repeat the problem under the assumption that no letter or number can be repeated

asked May 26, 2019 51.2k views

1 vote

by Bumbu

7.6k points

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1 vote

Numbers and letters can repeat:

$26^2\cdot10^5=676\cdot100,000=67,600,000$

No number and letter can repeat:

$26\cdot25\cdot10\cdot9\cdot8\cdot7\cdot6=19,656,000$

Evan Hu answered May 31, 2019

7.4k points

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