1.

How many five-digit number licence plates can be made if (i) first digit cannot be zero and the repetition of digits is not allowed. (ii) the first-digit cannot be zero, but the repetition of digits is not allowed?

Answer»

How many five-digit number licence plates can be made if
(i) first digit cannot be zero and the repetition of digits is not allowed.
(ii) the first-digit cannot be zero, but the repetition of digits is not allowed?



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