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 Aug 27 revised $z=100^2-x^2$. Then, how many values of $x,z$ are divisible by $6$? added 73 characters in body; edited title Aug 27 comment Straight Lines and Cordinate Geometry ^ @mistermarko, done. Aug 27 reviewed Reject and Edit Straight Lines and Cordinate Geometry Aug 27 revised Straight Lines and Cordinate Geometry deleted 21 characters in body; edited tags Aug 24 reviewed Reviewed Been trying to work this out for a while, please help me. Aug 24 revised Been trying to work this out for a while, please help me. added 7 characters in body Aug 17 awarded Popular Question 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 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 added 17 characters in body Jul 15 comment Number of solutions of a trigonometric equation involving sine @JanEerland, it has more than $8$ solutions. See answer below.