mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Between quadratics

Source: Luciano Rila (@DrTrapezio)
\(p(x)\) is a quadratic polynomial with real coefficients. For all real numbers \(x\),
$$x^2-2x+2\leq p(x)\leq 2x^2-4x+3$$
\(p(11)=181\). Find \(p(16)\).

Show answer

If you enjoyed this puzzle, check out Sunday Afternoon Maths L,
puzzles about coordinates, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

circles neighbours people maths geometric mean digital clocks crossnumbers means time geometric means bases prime factors symmetry volume floors surds sequences functions multiplication gerrymandering speed arrows proportion partitions elections tiling graphs multiplaction squares sport menace rugby shape odd numbers quadratics clocks advent averages coordinates lines 2d shapes star numbers unit fractions quadrilaterals balancing multiples decahedra folding tube maps wordplay doubling dates angles perimeter palindromes trigonometry dodecagons division expansions indices triangles christmas factorials tournaments factors consecutive integers integers games logic scales tangents range cards digits pascal's triangle square roots shapes grids irreducible numbers powers perfect numbers matrices polynomials consecutive numbers algebra lists binary the only crossnumber geometry fractions digital products squares routes crosswords probability remainders parabolas addition mean integration combinatorics ave xor chess triangle numbers spheres books square grids even numbers colouring probabilty hexagons calculus chocolate regular shapes square numbers sum to infinity cube numbers percentages planes area number ellipses sets rectangles dominos medians determinants numbers money taxicab geometry products coins complex numbers polygons cryptic clues prime numbers axes chalkdust crossnumber pentagons 3d shapes differentiation median cryptic crossnumbers dice sums cubics albgebra

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026