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16 digits that are arranged according to the Luhn rule (or Luhn test).
The number 8549176320 has all the digits arranged in alphabetical order.
If you're limited to only 5 digits that can't be repeated, then there are 120 ways they can be arranged.
Four - zeros between significant digits are significant.
The sum of the number of digits in all the numbers between 31 and 400 inclusive is 1041.
16 digits that are arranged according to the Luhn rule (or Luhn test).
The number is: 36725918 In descending order that is: 98765321 The pairs of numbers that have as many digits between them in both are: 3,9 5,8 6,7 So there are three pairs.
The number 8549176320 has all the digits arranged in alphabetical order.
It's the only number where the digits are arrange alphabetically, eight...five...four...nine...one...seven...six...three...two...zero. Actually, that answer is not completely true as stated. If you were to plug this number into Google you would find this same answer all over the web. It doesn't take a genius to realize that it is NOT the ONLY number where the digits are arranged alphabetically. For example, drop the 0 at the end and you STILL have a number that is arranged in alphabetical order. The answer should probably say, "It's the only number using all digits between zero and 9, that is arranged in alphabetical order".
None of them. The digits, arranged in descending order, are: 97654321 9 is 1 digit from the start 7 is 2 digit from the start etc So none.
If you're limited to only 5 digits that can't be repeated, then there are 120 ways they can be arranged.
There are 6484 digits BETWEEN the two given numbers.
i guess the answer is 54. A group of three digits can be selected from the 5 digits in 9 ways and each group can be arranged in 3! (i.e., 6) ways respectively and hence the answer is 6*9=54
Four - zeros between significant digits are significant.
one possible 183 762 945
Digits refers to the thumbs, fingers and toes in medical terminology.
5 significant digits because the 2 zeros are in between other significant digits.