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Advent calendar 2016

15 December

A book has 386 pages. What do the page numbers on the two middle pages add up to?
Tags: numbers

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

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