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The Problem: The prime factors of 13195 are 5, 7, 13, and 29.What is the largest prime factor of...

The Problem: Each new term in the Fibonacci sequence is generated by adding the previous two ter...

The Problem: Listing all multiples of 3 and 5 under 1000.Given: 3,5,6,9 are all multiples of 3 a...

The Problem: In this giant 1000 digit number the greatest product of 4 adjacent numbers is 9*9*8...