ID cards for a secret club consists of 3 letters followed by 2 digits. (ABC-10 for...
ID cards for a secret club consists of 3 letters followed by 2 digits. (ABC-10 for example) How many ID cards are possible if the first letter must be A and the last digit must be 0? (with No repetitions of letters, and No repetitions of digits)
Homework Answers
Number of options for first letter = 1
Number of options for second letter = 25 (all letters except A)
Number of options for third letter = 24 (all letters except the first 2)
Number of options for last digit = 1
Number of options for first digit = 9
Number of ID cards possible = 1x25x24x9x1
= 5400
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