Question 1207711
A password must contain exactly 8 characters with at least one upper case letter, one lower case letter, one number and one special character. In how many ways can the password be arranged.
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Upper case + lower case = 52 characters
+10 for the numers = 62 chars
Adding 10 "special chars" = 72 (other "special chars" are possible)
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---> 72^8  a big number.
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= 5184^4
5000^4 = 625,000,000,000,000