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How many license plates consisting of 3 letters followed by 4 digits are possible if the letters and digits can not be repeated?

2007-04-21 02:44:33 · 6 answers · asked by katiegirl 3 in Science & Mathematics Mathematics

6 answers

For the 3 letters we have 26*25*24 possibilities
For the 4 digits we have 10*9*8*7 possibilities.
So, by the basic principle of counting,
we have 26*25*24*10*9*8*7 = 78624000 possibilities.

2007-04-21 02:55:49 · answer #1 · answered by steiner1745 7 · 0 0

Its 26*25*24*10*9*8*7.

2007-04-21 02:51:16 · answer #2 · answered by yljacktt 5 · 0 0

26 * (26-1) *(26-2) * 10 * 9 * 8 * 7
= 78 624 000

2007-04-21 02:50:21 · answer #3 · answered by roman_king1 4 · 0 0

26^3 *10^4

175760000

2007-04-21 02:51:20 · answer #4 · answered by Soccer Tease 4 · 0 1

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2016-12-04 09:59:20 · answer #5 · answered by genna 3 · 0 0

26*25*24+10*9*8*7=20640

I think....

2007-04-21 02:48:41 · answer #6 · answered by armosnake 2 · 1 1

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