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Mathematics - mathematics
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The Mathematics Channel: Algebra, Geometry, Problems, Puzzles and History of Mathematics.
The Mathematics Channel: Algebra, Geometry, Problems, Puzzles and History of Mathematics.
Mathematics reveals the beauty of numbers: from algebra and geometry to calculus, problems, proofs and logic. Real-world applications, history of mathematics and elegant solutions for students and amateurs.
Answer: 142857 Follow @mathematics for more daily puzzles!
Открыть канал и посмотреть медиаHint: Set up an equation: if original = N, then 10(N−100000) + 1 = 3N.
Открыть канал и посмотреть медиаThe Vanishing Digit Mystery A 6-digit number begins with 1. Move the leading 1 to the end — the new number is exactly 3× the original. What is the number?
Открыть канал и посмотреть медиаAnswer: 24 zeros Follow @mathematics for more daily puzzles!
Открыть канал и посмотреть медиаHint: Count how many times 5 divides into 100!
Открыть канал и посмотреть медиаThe Sneaky Factorial Tail How many consecutive zeros does 100! end with?
Открыть канал и посмотреть медиаAnswer: 81/16 = 5.0625 cm² Follow @mathematics for more daily puzzles!
Открыть канал и посмотреть медиаHint: Each midpoint square has exactly half the area of the previous.
Открыть канал и посмотреть медиаThe Shrinking Square Spiral A square has area 81cm². Each new square connects midpoints of the previous one. What is the area of the 5th square?
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