Question

find the difference between the greatest and smallest 7 digit number that can be formed by the digts 7,1,4and3,if repetition of digits is allowed
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Answer 1

Answer:

6666084

Explanation:

Greatest 7-digit number with 7,1,4 and 3 = 7777431

Smallest 7-digit number with 7,1,4 and 3 = 1111347

So, difference = 7777431-1111347 = 6666084

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