Question

An identification code is to consist of six letters followed by three digits. How many different codes are possible if repetition is permitted?

Is it 6^3??

Answer 1

Use the rule of product (26 letters, 10digits):this number=26^6*10^3

Answer 2

SO IT WOULD BE 3.08915776^11??

Answer 3

No, it would be
308915776000=3.08915776*10^11

Answer 4

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