pascalhein
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 Dec20 awarded Constituent Dec20 awarded Caucus Sep30 awarded Explainer Jul16 comment Definition of Rational/ Irrational Numbers reguarding denominators @Ned: thank you for noticing, i fixed it in the answer Jul16 revised Definition of Rational/ Irrational Numbers reguarding denominators added 40 characters in body Jul16 revised Definition of Rational/ Irrational Numbers reguarding denominators added 220 characters in body Jul16 awarded Organizer Jul16 revised Definition of Rational/ Irrational Numbers reguarding denominators tags and formatting Jul16 answered Definition of Rational/ Irrational Numbers reguarding denominators Jul16 suggested approved edit on Definition of Rational/ Irrational Numbers reguarding denominators Jul16 answered can you help me solve my menu board dilemma? Jul15 awarded Citizen Patrol Jul13 awarded Yearling Jul13 revised What are the conditions needed by $n$ so that $2^{n+1}5^n-1$ is a prime number? OP obviously meant to use {}'s around exponent (see his examples) Jul13 suggested approved edit on What are the conditions needed by $n$ so that $2^{n+1}5^n-1$ is a prime number? Jul13 answered Function with single formula that have non zero value only in one small range Jun12 comment Prove $x^{n}-5x+7=0$ has no rational roots since $x|5x$, concluding $x|7$ is absolutely correct. Jun5 comment Difference in Probability when 2 numbered cards are picked together and when 2 cards picked one after the other. i think the question is about getting at least 1 odd card, not 2. Jun4 comment Dividing factorials is always integer you can use induction in Pascal's triangle May22 answered How are these inequalities simplified?