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Advent calendar 2016

7 December

Put the digits 1 to 9 (using each digit once) in the boxes so that the three digit numbers formed (reading left to right and top to bottom) have the desired properties written by their rows and columns.
multiple of 25
today's number
all digits even
multiple of 91multiple of 7cube number
Tags: grids, numbers

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

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