A license

A license plate has
3 letters followed by 4 numbers. Repeats are not allowed for the letters, but they are for the numbers. If they are issued at random, what is the probability that the 3 letters are in alphabetical order and the 3 numbers are consecutive?

Correct result:

p =  0


n1=26 25 24=15600 n2=104=10000  n=n1 n2=15600 10000=156000000  a1=25 1 1=25 b1=9 1 1 10+10 9 1 1=180 p=a1 b1n=25 180156000000=3104000=0

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