Show me a random puzzle
 Most recent collections 


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


Show me a random puzzle
▼ show ▼

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

© Matthew Scroggs 2019