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Advent calendar 2017

2 December

There are three cards; one number is written on each card. You are told that the sums of pairs of cards are 99, 83 and 102. What is the sum of all three cards?

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Tags: numbers

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

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