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Question Number 180200 Answers: 4 Comments: 2

A) How many even numbers of 3 different digits bigger than 300 can be formed from {1, 2, 3, 4} B) How many numbers bigger than 300 can be formed from the same group

$$\left.\boldsymbol{{A}}\right)\:{How}\:{many}\:{even}\:{numbers}\:{of}\:\mathrm{3}\:{different}\:{digits} \\ $$$$\:{bigger}\:{than}\:\mathrm{300}\:{can}\:{be}\:{formed}\:{from}\:\left\{\mathrm{1},\:\mathrm{2},\:\mathrm{3},\:\mathrm{4}\right\} \\ $$$$\left.\boldsymbol{{B}}\right)\:{How}\:{many}\:{numbers}\:{bigger}\:{than}\:\mathrm{300}\:{can} \\ $$$$\:\:\:\:\:\:\:\:{be}\:{formed}\:{from}\:{the}\:{same}\:{group} \\ $$

Question Number 180197 Answers: 0 Comments: 0

Question Number 180196 Answers: 0 Comments: 0

Question Number 180192 Answers: 1 Comments: 2

With 3 blue, 2 red and 2 pink beads how many necklaces can be made if there: a• is no clasp b• is a clasp

$${With}\:\mathrm{3}\:{blue},\:\mathrm{2}\:{red}\:{and}\:\mathrm{2}\:{pink}\:{beads}\:{how}\:{many} \\ $$$$\:{necklaces}\:{can}\:{be}\:{made}\:{if}\:{there}: \\ $$$$\:{a}\bullet\:{is}\:{no}\:{clasp}\:\:\:\:\:\:{b}\bullet\:{is}\:{a}\:{clasp} \\ $$$$\: \\ $$

Question Number 180191 Answers: 1 Comments: 0

A solid cone of height 56cm and a basem diaeter of 56cm is formed from al cylindrica drum equal in height andt diameer with the cone. Find the surfacee ara of the remaining part of the drum. (if the answer is accompanied by a diagramit will be perfect and I thank youo fr it).

$$ \\ $$$$\mathrm{A}\:\mathrm{solid}\:\mathrm{cone}\:\mathrm{of}\:\mathrm{height}\:\mathrm{56cm}\:\mathrm{and}\:\mathrm{a}\:\mathrm{basem} \\ $$$$\mathrm{diaeter}\:\mathrm{of}\:\mathrm{56cm}\:\mathrm{is}\:\mathrm{formed}\:\mathrm{from}\:\mathrm{al} \\ $$$$\mathrm{cylindrica}\:\mathrm{drum}\:\mathrm{equal}\:\mathrm{in}\:\mathrm{height}\:\mathrm{andt} \\ $$$$\mathrm{diameer}\:\mathrm{with}\:\mathrm{the}\:\mathrm{cone}.\:\mathrm{Find}\:\mathrm{the}\:\mathrm{surfacee} \\ $$$$\mathrm{ara}\:\mathrm{of}\:\mathrm{the}\:\mathrm{remaining}\:\mathrm{part}\:\mathrm{of}\:\mathrm{the}\:\mathrm{drum}. \\ $$$$ \\ $$$$\left(\mathrm{if}\:\mathrm{the}\:\mathrm{answer}\:\mathrm{is}\:\mathrm{accompanied}\:\mathrm{by}\:\mathrm{a}\:\right. \\ $$$$\mathrm{diagramit}\:\mathrm{will}\:\mathrm{be}\:\mathrm{perfect}\:\mathrm{and}\:\mathrm{I}\:\mathrm{thank}\:\mathrm{youo} \\ $$$$\left.\mathrm{fr}\:\mathrm{it}\right). \\ $$

Question Number 180190 Answers: 1 Comments: 0

Question Number 180188 Answers: 1 Comments: 0

Question Number 180186 Answers: 0 Comments: 0

A maintenance manager wishes to repair 8 out of 15 machines down. In how many ways can he create a list of 8 machines a\ If he has to precise the hour of repair of each of them ? b\ If he doesn′t precise the hour of repair of each of them ? c\ Haven chosen the 8 machines, in how many ways can he define the order of repair of each of them ?

Question Number 180162 Answers: 0 Comments: 9

How many words can be formed from letters of the “Your answer is wrong”? So that they shouldn′t start with ′o′ neither ′w′ and shouldn′t end with ′w′, and should be′r′ & ′s′ adjacents. Oya...n, Wen...y, Iog...w , Yourws...e : are invalid Enrsow...g : is valid

$${How}\:{many}\:{words}\:{can}\:{be}\:{formed}\:{from}\:{letters}\:{of}\:{the} \\ $$$$\:``{Your}\:{answer}\:{is}\:{wrong}''?\:{So}\:{that}\:{they}\:{shouldn}'{t} \\ $$$$\:{start}\:{with}\:'{o}'\:{neither}\:'{w}'\:{and}\:\:{shouldn}'{t}\:{end} \\ $$$$\:{with}\:'{w}',\:{and}\:{should}\:{be}'{r}'\:\&\:'{s}'\:{adjacents}. \\ $$$$ \\ $$$$\:\cancel{{O}ya}...{n},\:\cancel{{W}en}...{y},\:{Iog}...\cancel{{w}}\:,\:{You}\cancel{{r}w}\cancel{{s}}...{e}\:\::\:{are}\:{invalid} \\ $$$$\:{Enrsow}...{g}\::\:{is}\:{valid} \\ $$$$ \\ $$

Question Number 180159 Answers: 1 Comments: 0

Express the function f(z)=ze^(iz) in polar form and separate it into Real and Imaginary part. M.m

$$\mathrm{Express}\:\mathrm{the}\:\mathrm{function}\:\mathrm{f}\left(\mathrm{z}\right)=\mathrm{ze}^{\mathrm{iz}} \:\mathrm{in}\:\mathrm{polar} \\ $$$$\mathrm{form}\:\mathrm{and}\:\mathrm{separate}\:\mathrm{it}\:\mathrm{into}\:\mathrm{Real}\:\mathrm{and}\: \\ $$$$\mathrm{Imaginary}\:\mathrm{part}. \\ $$$$ \\ $$$$\mathrm{M}.\mathrm{m} \\ $$

Question Number 180157 Answers: 2 Comments: 0

As the force on a string increases from 100N to 180N, the string extends by 10cm. The work done in increasing the tension in the string is?

Question Number 180151 Answers: 1 Comments: 0

1)twenty men are invited for a dinner and are to be seated around a circular table.how many diffrent arrangment are possible? 2)with ten men and ten women. how many diffrent arrangment are possible that alternate men and women?

$$\left.\mathrm{1}\right){twenty}\:{men}\:{are}\:{invited}\:{for}\:{a}\:{dinner}\:{and}\:{are}\:{to}\: \\ $$$${be}\:{seated}\:{around}\:{a}\:{circular}\:{table}.{how} \\ $$$${many}\:{diffrent}\:{arrangment}\:{are}\:{possible}? \\ $$$$\left.\mathrm{2}\right){with}\:{ten}\:{men}\:{and}\:{ten}\:{women}.\:{how}\:{many} \\ $$$${diffrent}\:{arrangment}\:{are}\:{possible}\:{that} \\ $$$${alternate}\:{men}\:{and}\:{women}? \\ $$$$ \\ $$

Question Number 180149 Answers: 0 Comments: 0

If ω−Brocard′s angle in △ABC then: Π_(cyc) ((1/(sin ω)) − 2 cos A) ≥ 1

$$\mathrm{If}\:\:\omega−\mathrm{Brocard}'\mathrm{s}\:\mathrm{angle}\:\mathrm{in}\:\:\bigtriangleup\mathrm{ABC}\:\:\mathrm{then}: \\ $$$$\underset{\boldsymbol{\mathrm{cyc}}} {\prod}\:\left(\frac{\mathrm{1}}{\mathrm{sin}\:\omega}\:−\:\mathrm{2}\:\mathrm{cos}\:\mathrm{A}\right)\:\geqslant\:\mathrm{1} \\ $$

Question Number 180145 Answers: 1 Comments: 0

determine 1)L^− [((4s^2 −17s−24)/(s(s+3)(s−4)))] 2)L^− [((5s^2 −4s−7)/((s−3)(s^2 +4)))]

$${determine} \\ $$$$\left.\mathrm{1}\right)\mathcal{L}^{−} \left[\frac{\mathrm{4}{s}^{\mathrm{2}} −\mathrm{17}{s}−\mathrm{24}}{{s}\left({s}+\mathrm{3}\right)\left({s}−\mathrm{4}\right)}\right] \\ $$$$\left.\mathrm{2}\right)\mathcal{L}^{−} \left[\frac{\mathrm{5}{s}^{\mathrm{2}} −\mathrm{4}{s}−\mathrm{7}}{\left({s}−\mathrm{3}\right)\left({s}^{\mathrm{2}} +\mathrm{4}\right)}\right] \\ $$

Question Number 180142 Answers: 0 Comments: 0