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CTET 8 Feb 2026 Paper 1, Question 44

Topic: Numbers

Q44

The difference between the greatest and smallest five digit numbers that can be formed using the digits 8, 2, 7, 0 and 6 only once is :

  1. (1) 65942
  2. (2) 66942Correct answer
  3. (3) 67942
  4. (4) 56942

Solution.

CBSE answer: (2)

Answer: (2) 66942

  1. Greatest: arrange digits in decreasing order: 87620.
  2. Smallest: 0 cannot be first, so start with 2, then 0, 6, 7, 8: 20678.
  3. 87620−20678=6694287620 - 20678 = 66942.
  4. Check by adding back: 20678+66942=8762020678 + 66942 = 87620, which matches the greatest number.

Trap: (1) 65942 comes from a borrowing slip.