Euler problems/41 to 50
Problem 41
What is the largest n-digit pandigital prime that exists?
Solution:
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Problem 42
How many triangle words can you make using the list of common English words?
Solution:
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Problem 43
Find the sum of all pandigital numbers with an unusual sub-string divisibility property.
Solution:
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Problem 44
Find the smallest pair of pentagonal numbers whose sum and difference is pentagonal.
Solution:
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Problem 45
After 40755, what is the next triangle number that is also pentagonal and hexagonal?
Solution:
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Problem 46
What is the smallest odd composite that cannot be written as the sum of a prime and twice a square?
Solution:
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Problem 47
Find the first four consecutive integers to have four distinct primes factors.
Solution:
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Problem 48
Find the last ten digits of 11 + 22 + ... + 10001000.
Solution:
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Problem 49
Find arithmetic sequences, made of prime terms, whose four digits are permutations of each other.
Solution:
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Problem 50
Which prime, below one-million, can be written as the sum of the most consecutive primes?
Solution:
problem_50 = undefined