Find the difference between the largest and smallest four digit numbers formed by the digits 0, 1, 4 and 7 without repeating the digits, using all of them at a time.

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CTET Paper 1 - 21st Dec 2021 (Eng/Hin/Sans/Ben/Mar/Tel)
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  1. 6363
  2. 7410
  3. 6777
  4. 7263

Answer (Detailed Solution Below)

Option 1 : 6363
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Detailed Solution

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The given digits are 0, 1, 4, and 7.

The smallest four-digit number that can be formed from the given digits is 1047.

The largest four-digit number that can be formed from the given digits is 7410.

The difference between the largest and smallest four-digit numbers = 7410 - 1047 = 6363

Therefore, the difference between the largest and smallest four-digit numbers formed by the digits 0, 1, 4, and 7 is 6363.

Hence, the correct answer is 6363.

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