# Euler problems/131 to 140

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− | == [http://projecteuler.net/index.php?section=view&id=131 Problem 131] == |
+ | Do them on your own! |

− | Determining primes, p, for which n3 + n2p is a perfect cube. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=132 Problem 132] == |
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− | Determining the first forty prime factors of a very large repunit. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=133 Problem 133] == |
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− | Investigating which primes will never divide a repunit containing 10n digits. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=134 Problem 134] == |
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− | Finding the smallest positive integer related to any pair of consecutive primes. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=135 Problem 135] == |
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− | Determining the number of solutions of the equation x2 − y2 − z2 = n. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=136 Problem 136] == |
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− | Discover when the equation x2 − y2 − z2 = n has a unique solution. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=137 Problem 137] == |
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− | Determining the value of infinite polynomial series for which the coefficients are Fibonacci numbers. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=138 Problem 138] == |
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− | Investigating isosceles triangle for which the height and base length differ by one. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=139 Problem 139] == |
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− | Finding Pythagorean triangles which allow the square on the hypotenuse square to be tiled. |
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− | Solution: |
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− | == [http://projecteuler.net/index.php?section=view&id=140 Problem 140] == |
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− | Investigating the value of infinite polynomial series for which the coefficients are a linear second order recurrence relation. |
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− | Solution: |

## Revision as of 21:44, 29 January 2008

Do them on your own!