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CAT 1998 — QA Question 8

Number TheoryEasy

Five-digit numbers are formed using only 0, 1, 2, 3, 4 exactly once. What is the difference between the maximum and minimum number that can be formed?

Answer & solution

Correct answer: 32976

  • A

    19800

  • B

    41976

  • 32976

  • D

    None of these

Solution

The maximum and the minimum five-digit numbers that can be formed using only 0, 1, 2, 3, 4 exactly once are 43210 and 10234 respectively. The difference between them is 43210 – 10234 = 32976.

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CAT 1998 QA Q8: Five-digit numbers are formed using only 0, 1, 2, 3, 4 exactly once. What is the difference between the maximu — Solution | TheCATExam