1019 past contests
Topic 25 · System $-x+2y+4z=5$, $2x-3y-3z=-1$, $3x-4y-5z=-3$ by elimination
Topic 35 · Diagonals of a kite are perpendicular but do not bisect each other (true/false)
Topic 34 · Diagonals of a rhombus are perpendicular but not congruent (true/false)
Topic 34 · Diagonals of a rectangle are congruent but not perpendicular (true/false)
Topic 30 · Curve with gradient $3x^2-2x+1$ through a given point
Topic 17 · Solving $x\star3=37$ for $a\star b=a^2-ab+b^2$
Topic 21 · Solving $|2x-5|\lt9$
Topic 8 · Solving $\log_5(\log_4x)=3$
Topic 8 · Solving $\log_2(\log_3x)=1$ and $\log_3(\log_2x)=2$
Topic 19 · Minimum of $g(x)=3x^2-12x+16$
Topic 19 · Maximum of $h(x)=-2x^2-12x-15$
Topic 19 · Maximum of $f(x)=-x^2+6x-11$
Topic 8 · Solving $\log(x^2-9x)=1$
Topic 19 · Vertex of $y=-3x^2+18x-23$
Topic 14 · Domain of $f(x)=x^2-3x+2$
Topic 40 · Greatest value of $3\sin x+4\cos x$
Topic 18 · Rationalising $\dfrac{3}{\sqrt{5}-\sqrt{2}}$
Topic 9 · Finding the base $n$ when $123_n=38_{10}$
Topic 9 · Finding the prime numbers between $80$ and $90$
Topic 11 · Image of the line $y=2x$ under a reflection in the $y$-axis