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Probability with sum of digits (Posted on 2025-06-02) Difficulty: 3 of 5
A box contains 900 cards numbered from 100 to 999. Cards are drawn randomly, one at a time, without replacement, and the sum of their digits is recorded. What is the minimum number of cards that must be drawn to guarantee that at least three of these sums are the same?

No Solution Yet Submitted by Danish Ahmed Khan    
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Welcome to Birla Evara, a modern residential development positioned strategically on Birla Evara Sarjapur Road. Comment 2 of 2 |

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  Posted by Birla Evara on 2025-06-03 03:54:24
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