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15
Math.TechQA.Club
2019-01-04 21:08:32
41
Views
two points and an equation
Published on
04 Jan 2019 - 21:08
#graphing-functions
#problem-solving
170
Views
Prove that $3^{30} \equiv 1 + 17 \cdot 31 \pmod{31^{2}}$.
Published on
05 Jan 2019 - 3:39
#elementary-number-theory
#modular-arithmetic
#problem-solving
67
Views
Is there something wrong with brackets? $f(2x+(f(y)+f(f(y))=4x+8y$
Published on
05 Jan 2019 - 11:02
#algebra-precalculus
#contest-math
#problem-solving
831
Views
How many $10-$digit numbers are divided by $11.111$ and all the digits are different?
Published on
25 Mar 2026 - 22:04
#algebra-precalculus
#contest-math
#problem-solving
#natural-numbers
1.7k
Views
What is the mathematical meaning of this question?
Published on
26 Mar 2026 - 6:21
#algebra-precalculus
#contest-math
#problem-solving
#means
229
Views
Calculate the probability with a finite arithmetic progression
Published on
26 Mar 2026 - 1:00
#probability
#problem-solving
#arithmetic-progressions
66
Views
How do we find the integer corresponding to this probability problem?
Published on
08 Jan 2019 - 2:45
#probability
#problem-solving
176
Views
How would you define a superproblem?
Published on
09 Jan 2019 - 19:24
#problem-solving
382
Views
Power tower last digits
Published on
13 Jan 2019 - 19:45
#modular-arithmetic
#problem-solving
181
Views
Solving $8x-3+\sqrt{x+2}-\sqrt{x-1}=7 \sqrt{x^2+x-2}$
Published on
23 Mar 2026 - 3:10
#algebra-precalculus
#problem-solving
#radicals
#substitution
#algebraic-equations
200
Views
Apocorubik's Cube (10,000 blocks across): How long to solve if a quarter turn takes 2.8 seconds?
Published on
25 Mar 2026 - 6:13
#problem-solving
#rubiks-cube
65
Views
NP-hard problems of feasibility
Published on
21 Jan 2019 - 18:38
#problem-solving
59
Views
How to choose Eigenvaues for system extending in perpendicular direction?
Published on
23 Mar 2026 - 16:08
#ordinary-differential-equations
#eigenvalues-eigenvectors
#problem-solving
#matlab
#boundary-value-problem
77
Views
Last digit of power explanation
Published on
22 Jan 2019 - 19:58
#modular-arithmetic
#problem-solving
48
Views
Modulo computing without Euler's theorem
Published on
23 Jan 2019 - 13:18
#modular-arithmetic
#problem-solving
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