An email password must contain 3 characters , the password has to contain one numeral 0 to 9, one uppercase and one lowercase character from the english alphabet. how many distinct passwords are possible? (permutation and combination is applied)
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Answer:
40560
Step-by-step explanation:
Select any digit from 10 digits, one uppercase alphabet from 26$alphabets and one lowercase alphabets from 26 alphabets, each combination can permute 3! times for ex: 5Ab, 5bA, A5b, Ab5, bA5, b5A
So, total possible passwords= (10C1 * 26C1 * 26C1 ) * 3!
= 40560
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