This is a series of questions that are created by me.

Here is question 8:


I will give a hint to you guys if I feel it is necessary.

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Number Sequence Series-Question 7

Number sequences: 6X000X9, 700XX08,00000015,?,00000015

  • $\begingroup$ Sorry I did not see this contest before..I have changed the question. $\endgroup$
    Commented May 29, 2019 at 16:24
  • 5
    $\begingroup$ If no one has pointed you to it yet, you might want to read Number Sequence Puzzles: What Not To Do. Frankly, this type of puzzle is not that interesting, and you have posted quite a few of them in the last few days. You might want to think about a different kind of puzzle, or of finding ways to incorporate your sequences into a story that makes it more interesting for the solver. $\endgroup$ Commented May 29, 2019 at 17:06
  • $\begingroup$ @GentlePurpleRain The logic behind the number sequence is quite interesting tho $\endgroup$
    – ANOOB
    Commented May 30, 2019 at 7:31
  • 1
    $\begingroup$ @ANOOB The logic may be interesting, but until you've solved it, the puzzle is not. Ideally, you want people to want to solve your puzzle, not look at it and groan at yet another bland looking number sequence with nothing distinctive about it to guide you toward a solution. $\endgroup$
    – Rubio
    Commented May 31, 2019 at 23:57

1 Answer 1


An answer is

41 and 25


Basically, the logic is 'The Sum of Squares'


45=3²+6² & 41=4²+5² & 17=1²+4² & 50=7²+1²


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