Aspire Faculty ID #11571 · Topic: NIMCET 2023 · Just now
NIMCET 2023

If 3 is subtracted from the middle digit of each of the following numbers and then the position of the digits are reversed, which of the following will be the last digit of the middle number after they are arranged in descending order?
589 362 554 371 442

Solution

Digit Puzzle: Final Digit of the Middle Number

Given Numbers: 589, 362, 554, 371, 442

Step 1: Subtract 3 from the middle digit of each number

  • 589 → 589 → 559 → 559
  • 362 → 362 → 332 → 332
  • 554 → 554 → 524 → 524
  • 371 → 371 → 341 → 341
  • 442 → 442 → 412 → 412

Step 2: Reverse the digits of each new number

  • 559 → 955
  • 332 → 233
  • 524 → 425
  • 341 → 143
  • 412 → 214

Step 3: Arrange in descending order

955, 425, 233, 214, 143

Step 4: Pick the middle number

Middle number = 233

Step 5: Find the last digit

Last digit of 233 = 3

✅ Final Answer: 3

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