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Martha writes down a random mathematical expression consisting of 3 single-digit positive integers with an addition sign "+" or a multiplication sign " \(\times\) " between each pair of adjacent digits.

asked Dec 8, 2022 by ♦MathsGee Diamond (89,175 points) | 78 views

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Which of the following numbers is a perfect square?

asked Nov 29, 2022 by ♦Maths Genie Bronze Status (8,170 points) | 109 views

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Determine all possible values of the sum of the digits of a perfect square.

asked Sep 23, 2022 by ♦MathsGee Diamond (89,175 points) | 122 views

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Does a perfect hedge using futures, involve locking in the current spot price which will then effectively be the price paid in the future?

asked Aug 18, 2022 by ♦MathsGee Diamond (89,175 points) | 119 views

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Express the number \(32,955,000=2^{3} \cdot 3 \cdot 5^{4} \cdot 13^{3}\) as the product of a squarefree number and a perfect square.

asked Jul 29, 2022 by ♦GaussTheBot Diamond (45,615 points) | 84 views

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The student noticed that if he writes a multiplication sign between the second and third digit of number 2020 the product \(20 \cdot 20\) gives a perfect square. How many numbers between 2010 and 2099 (without 2020) have the same property?

asked Jul 21, 2022 by ♦GaussTheBot Diamond (45,615 points) | 526 views

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How many odd perfect squares are between 5 and 211?

asked Jul 7, 2022 by ♦MathsGee Diamond (89,175 points) | 114 views

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Prove that a prime number cannot be a perfect number.

asked Jun 4, 2022 by ♦GaussTheBot Diamond (45,615 points) | 228 views

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What are the characteristics of a centrally planned market?

asked May 23, 2022 by ♦GaussTheBot Diamond (45,615 points) | 169 views

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What are the characteristics of a perfect market?

asked May 21, 2022 by ♦GaussTheBot Diamond (45,615 points) | 128 views

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Which of these numbers is both a perfect square and a cube?

asked Jan 29, 2022 by ♦MathsGee Diamond (89,175 points) | 220 views

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Which number(s) is(are) equal to half its (their) square?

asked Jan 29, 2022 by ♦MathsGee Diamond (89,175 points) | 499 views

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Which number(s) is(are) equal to the quarter of its (their) square?

asked Jan 29, 2022 by ♦MathsGee Diamond (89,175 points) | 272 views

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Complete the sentences with the simple past, present perfect or present perfect continuous of the verbs in brackets.

asked Jan 18, 2022 by ♦MathsGee Diamond (89,175 points) | 559 views

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The student noticed that if he writes a multiplication sign between the second and third digit of number 2020 the product $20 \cdot 20$ gives a perfect square.

asked Jun 16, 2021 by ♦MathsGee Diamond (89,175 points) | 1,621 views

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Show that $x^2-6x+9$ is a perfect square.

asked Jun 14, 2021 by ♦Maths Genie Bronze Status (8,170 points) | 271 views

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Show that $x^2+2x+1$ is a perfect square.

asked Jun 14, 2021 by ♦Maths Genie Bronze Status (8,170 points) | 210 views

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Show that the Cantor set is perfect.

asked May 10, 2021 by Student Bronze Status (5,662 points) | 237 views

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How do I know if a number is a perfect square?

asked May 25, 2020 by ♦MathsGee Diamond (89,175 points) | 345 views

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What is Perfect Matching in graph theory?

asked Apr 26, 2020 by ♦MathsGee Diamond (89,175 points) | 221 views

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What is a perfect square in mathematics?

asked Sep 1, 2019 by ♦MathsGee Diamond (89,175 points) | 337 views

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Does there exist a number that is perfect and odd?

asked Aug 10, 2019 by ♦MathsGee Diamond (89,175 points) | 222 views

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