mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

What is the sum?

What is \(\displaystyle\frac{1}{\sqrt{1}+\sqrt{2}}+\frac{1}{\sqrt{2}+\sqrt{3}}+...+\frac{1}{\sqrt{15}+\sqrt{16}}\)?

Show answer

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020