Typical "find their ages" word puzzle
In another ten years Bob will be twice the age of Adrian. Ten years ago, Bob was three times the age of Adrian. How old are Bob and Adrian? Sign in to see full entry.
Mathematics: Typical "find their ages" word puzzle
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Explaining mathematical topics
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- Number of primes between consecutive squares
- If x+y = x y = 3, then what is x^3 + y^3?
- Examples of Sum of products equal to sum of products
- Quotation about teaching math.
- How to make the sum or difference of two integers to be prime
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