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AllQuestion and Answers: Page 74
Question Number 210457 Answers: 2 Comments: 3
Question Number 210456 Answers: 2 Comments: 5
Question Number 210441 Answers: 2 Comments: 0
Question Number 210439 Answers: 1 Comments: 1
Question Number 210432 Answers: 1 Comments: 0
$$ \\ $$How many different five-digit numbers can be written from the digits 1,2,3,4,5,6,7,8 if the digits are not repeated?
Question Number 210416 Answers: 0 Comments: 3
Question Number 210396 Answers: 1 Comments: 2
Question Number 210392 Answers: 1 Comments: 1
Question Number 210390 Answers: 1 Comments: 0
Question Number 210421 Answers: 1 Comments: 0
Question Number 210375 Answers: 2 Comments: 4
Question Number 210374 Answers: 4 Comments: 1
Question Number 210373 Answers: 3 Comments: 2
Question Number 210372 Answers: 5 Comments: 1
Question Number 210371 Answers: 4 Comments: 0
Question Number 210355 Answers: 1 Comments: 0
Question Number 210354 Answers: 2 Comments: 0
$$\int_{\mathrm{0}} ^{\boldsymbol{\alpha}} \frac{\boldsymbol{\mathrm{x}}}{\left(\mathrm{1}+\boldsymbol{\mathrm{x}}^{\mathrm{2}} \right)\left(\mathrm{1}+\boldsymbol{\alpha\mathrm{x}}\right)}\boldsymbol{\mathrm{dx}} \\ $$
Question Number 210368 Answers: 0 Comments: 0
Question Number 210362 Answers: 1 Comments: 2
$$\mathrm{If}\:\mathrm{the}\:\mathrm{roots}\:\mathrm{of}\:\mathrm{the}\:\mathrm{quadratic}\:\mathrm{equation} \\ $$$$\left({a}\:−\:{b}\:+\:{c}\right){x}^{\mathrm{2}} \:+\:\left({c}\:−\:{b}\:−\:{a}\right){x}\:+\:\mathrm{2}\left({b}\:−\:{c}\right)\:=\:\mathrm{0} \\ $$$$\mathrm{are}\:\mathrm{real}\:\mathrm{and}\:\mathrm{equal}\:\mathrm{then}\:\mathrm{find}\:\frac{{a}}{{b}\:−\:{c}}\:. \\ $$
Question Number 210326 Answers: 1 Comments: 6
$$\int_{\mathrm{0}} ^{\pi} \:\frac{{tsin}\left({t}\right)}{\mathrm{1}+{t}^{\mathrm{2}} }{dt} \\ $$
Question Number 210324 Answers: 1 Comments: 2
$$\mathrm{rationalize}\:\mathrm{the}\:\mathrm{denominator}: \\ $$$$\frac{\mathrm{1}}{{a}+{b}^{\mathrm{1}/\mathrm{3}} +{c}^{\mathrm{1}/\mathrm{3}} } \\ $$
Question Number 210318 Answers: 4 Comments: 1
Question Number 210314 Answers: 1 Comments: 0
$$\mathrm{2}{x}+\mathrm{4}=\mathrm{1} \\ $$
Question Number 210312 Answers: 0 Comments: 0
Question Number 210311 Answers: 1 Comments: 0
$${Let}\:{a}_{\mathrm{1}} =\mathrm{1}\:\:\:{a}_{\mathrm{2}} =\mathrm{2}^{\mathrm{1}} \:\:\:\:{a}_{\mathrm{3}} =\mathrm{3}^{\left(\mathrm{2}^{\mathrm{1}} \right)} \:\:{a}_{\mathrm{4}} =\mathrm{4}^{\left(\mathrm{3}^{\left(\mathrm{2}^{\mathrm{1}} \right)} \right)} \\ $$$${find}\:{the}\:{last}\:{two}\:{digits}\:{of}\:{a}_{\mathrm{23}} \:{and}\:{so}\:{on} \\ $$
Question Number 210310 Answers: 2 Comments: 4
$${Let}\:{a}\:{be}\:{the}\:{unique}\:{real}\:{zero}\:{of}\:{x}^{\mathrm{3}} +{x}+\mathrm{1}. \\ $$$${find}\:{the}\:{simplest}\:{possible}\:{way}\:{to}\:{write}\: \\ $$$$\frac{\mathrm{18}}{\left({a}^{\mathrm{2}} +{a}+\mathrm{1}\right)^{\mathrm{2}} }\:\:{as}\:{polynomial}\:{expression}\:{in}\:\:{a} \\ $$$${with}\:{ratio}\:{coefficients} \\ $$
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