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Jul
18
revised Does $(a^p + b^p)^{p-1} \equiv 1 \pmod {p^2}$ have any solutions where $a$ and $b$ are co-primes less than $p$?
added 8 characters in body; edited title
Jul
17
reviewed Edit Powers of a $2 \times 2$ matrix
Jul
17
revised Powers of a $2 \times 2$ matrix
added 50 characters in body; edited title
Jul
17
comment Powers of a $2 \times 2$ matrix
best answer I saw today! Thanks +1.
Jul
17
revised Let $x$ be an irrational number. Prove that there exist infinitely many rational numbers $\dfrac pq$ that satisfy the following
added 24 characters in body
Jul
16
reviewed Reject $P[ \min_{ 1 \leq i \leq n} D_i > 0] \rightarrow 0 $ as $n \rightarrow 0$
Jul
16
reviewed Approve Normal Distribution Quartiles
Jul
16
reviewed Approve I got stucked in middle of the problem. How to find the value of radius 'x' cm from the given figure?
Jul
16
reviewed Approve Collinear points if and only if difference of angles is 90
Jul
16
reviewed Approve If the hypotenuse is $4$ times the height from $A$, prove that one of the angles is $15^\circ$
Jul
16
revised Do the sum of all prime reciprocals with the digit $3$ converge or diverge?
edited title
Jul
15
comment Second order pde in 2 variables
did i edit the question correctly?
Jul
15
revised Second order pde in 2 variables
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Jul
15
comment Number of solutions of a trigonometric equation involving sine
@JanEerland, it has more than $8$ solutions. See answer below.
Jul
15
revised Number of solutions of a trigonometric equation involving sine
added 4 characters in body
Jul
15
reviewed Reviewed Prove it by theory of combination
Jul
15
revised Prove it by theory of combination
added 22 characters in body
Jul
15
reviewed Approve How many different Tsuro tiles can exist?
Jul
15
revised Number of solutions of a trigonometric equation involving sine
added 4 characters in body
Jul
15
revised Relatively prime to $42$ and $70$
added 8 characters in body; edited title