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It is 120 if the digits cannot be repeated.
If repetition of digits isn't allowed, then no13-digit sequencescan be formed from only 5 digits.
jfnvjsdkncjfdknvlakdjvbsadoihfcb shfvbcnsHLfc bnshJCbvjhbeshuyvbe b hdfbgehfgbwahucgbvfer fguy gyfuby uyr
If the two must be different digits, then there 20 possibilities. If they can be the same one, then there are 25 possibilities.
500