question archive The access code to a house?s security system consists of five digits
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The access code to a house?s security system consists of five digits. How many different codes are available if each digit can be repeated?
A) 3125 B) 100,000 C) 32 D) 5
Answer:
B )
Step-by-Step explanation
Repetition of the digit is allowed. Therefore,
For each digit we have 10 choices (0 to 9).
The total number of different codes can be generated :
10 ?×? 10 ?×? 10 ?×? 10 ?×? 10 = 100,000