Posted by **Katie** on Wednesday, May 14, 2008 at 4:48pm.

Find the possible nuber of license plates consisting of 2 letters followed by 4 digits if digits can be repeated but letters can not

a. 3,276,000

b. 3,407,040

c. 6,500,000

d. 6,760,000

I thought 26*24*24*23*22*21*20 etc/9 but that wasnt right and its just really confusing

- Statistics -
**Reiny**, Wednesday, May 14, 2008 at 5:07pm
the two letters at the front cannot be repeated, so that is 26*25

there are one 10 of digits in each of the

next 4 places, with the digits repeated, so that would be 10*10*10*10

no of ways = 26*25*10*10*10*10 = 6500000

I don't understand at all how you came up with 26*24*24*23*22*21*20

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