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These problems are mostly math-related. That's not to say that they're all straightforward. You'll still need to flex your noggin to figure them out!
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> Calculus
Difficulty: 3 of 5 Latest: Palindromic sum
Express 314159265358979323846 as a sum of positive palindromes, the idea being to use as few summands as you can.
(No Solution Yet, 3 Comments) Submitted on 2017-08-08 by Danish Ahmed Khan   
Page 2 of 115   << prev next >>    
Difficulty: 2 of 5At most - equality |
Posted on 2017-03-06 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Inequality with a constraint |
Posted on 2017-03-04 by Ady TZIDON (No Solution Yet, 0 Comments)
Difficulty: 2 of 5a KISS puzzle |
Posted on 2017-02-27 by Ady TZIDON (Solution Posted, 2 Comments)
Difficulty: 3 of 5Integer triplets |
Posted on 2017-02-21 by Ady TZIDON (Solution Posted, 4 Comments)
Difficulty: 4 of 5Placing 4 integers within a set interval |
Posted on 2017-02-17 by Ady TZIDON (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Sets' intersection |
Posted on 2017-02-16 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Trying to reach a Pythagorean triplet |
Posted on 2017-02-12 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 2 of 5A table 4 4 |
Posted on 2017-02-05 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Ain't she clever? |
Posted on 2017-01-24 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Non-zero solutions only |
Posted on 2017-01-23 by Ady TZIDON (No Solution Yet, 0 Comments)
Difficulty: 2 of 5Additional values |
Posted on 2017-01-22 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Powers of x and y | Rating: 4.00
Posted on 2017-01-21 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 2 of 5When is it a square? |
Posted on 2017-01-15 by Ady TZIDON (Solution Posted, 1 Comments)
Difficulty: 3 of 5Squares sum up to a prime |
Posted on 2017-01-13 by Ady TZIDON (Solution Posted, 4 Comments)
Difficulty: 2 of 5Functional Question |
Posted on 2017-01-10 by Charlie (Solution Posted, 2 Comments)
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