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Each grey box on a card hides one digit (any digit 0 to 9). Which card is SURE to show the greatest number?

Class 6Comparing NumbersNumbers
  • ACard A
  • BCard D
  • CCard B
  • DCard C

Step-by-Step Solution

Card B has 6 digits; the others have 4 or 5. Any 6-digit number (at least 1,00,000) is greater than every 5-digit or 4-digit number, so the leading 9s on A and D do not matter.
Answer: C) Card B

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