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Part of 2023 CUBRMC
Problems(2)
2023 CUBRMC Proof # 1 \sqrt{(z + x)(z + y)} - z >=\sqrt{xy}
Source:
3/8/2024
Let be positive real numbers. Prove that
algebrainequalitiescubrmc
2023 CUBRMC Team #1 n-(sum of digits of n)
Source:
3/8/2024
Ben starts with an integer greater than and subtracts the sum of its digits from it to get a new integer. He repeats this process with each new integer he gets until he gets a positive -digit integer. Find all possible -digit integers Ben can end with from this process.
number theorycubrmc