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 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2019