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Description
50 Maths Ideas You Really Need to KnowWho invented zero? Why 60 seconds in a minute? How big is infinity? Where do parallel lines meet? And can a butterfly's wings really cause a storm on the far side of the world? In 50 Maths Ideas You Really Need to Know, Professor Tony Crilly explains in 50 clear and concise essays the mathematical conceptsancient and modern, theoretical and practical, everyday and esotericthat allow us to understand and shape the world around us. Packed with diagrams,
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 675 reviews
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Product Reviews
★★★★★ 5
Quality made and sharp!
Color: 7-in-1 Gunmetal Grey, Size: Rechargeable Set
Really sharp, really well made. love it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 5
Wonderfull easy to use
Color: 7-in-1 Gunmetal Grey, Size: Rechargeable Set
great item was able to have the who i gave it to order one for their father
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Reviewed in the United States on April 10, 2026
★★★★★ 5
not bad
Color: 7-in-1 Gunmetal Grey, Size: Rechargeable Set
Works well so far after a few months. We bought the s3cura and it quit after a short time so we got this one and so far so good.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Wine opener
Color: 7-in-1 Gunmetal Grey, Size: Rechargeable Set
Works great!
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Easier to use than others I have had
Color: 7-in-1 Gunmetal Grey, Size: Rechargeable Set
Works great - smooth. Love the electric vacuum pump too!
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Reviewed in the United States on September 15, 2025
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