Question: An ID code consists of 4 different letters and 3 different digits. How many codes are possible if the letters must be kept together? For

An ID code consists of 4 different letters and 3 different

An ID code consists of 4 different letters and 3 different digits. How many codes are possible if the letters must be kept together? For example, 34ABCD9 and WAXT604 are good, but T R67Y Z3 is bad. (a combination problem, order does not matter) A lottery ticket consists of four integers between 1 and 99 (inclusive). How many different lottery tickets are there

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