Cite
MLA Citation
The UK Mathematics Trust. The Ultimate Mathematical Challenge : Over 365 puzzles to test your wits and excite your mind.. London : HarperCollins, 2018. http://access.bl.uk/ark:/81055/vdc_100069819757.0x000001
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The UK Mathematics Trust. The Ultimate Mathematical Challenge : Over 365 puzzles to test your wits and excite your mind.. London : HarperCollins, 2018. http://access.bl.uk/ark:/81055/vdc_100069819757.0x000001