Question and Answers Forum

All Questions      Topic List

Algebra Questions

Previous in All Question      Next in All Question      

Previous in Algebra      Next in Algebra      

Question Number 185684 by Shrinava last updated on 25/Jan/23

17 , 78, 143, 353, ? a)366 b)0 c)398 d)435

$$\mathrm{17}\:,\:\mathrm{78},\:\mathrm{143},\:\mathrm{353},\:? \\ $$$$\left.\mathrm{a}\left.\right)\left.\mathrm{3}\left.\mathrm{66}\:\:\:\:\:\mathrm{b}\right)\mathrm{0}\:\:\:\:\:\mathrm{c}\right)\mathrm{398}\:\:\:\:\:\mathrm{d}\right)\mathrm{435} \\ $$

Commented by Frix last updated on 25/Jan/23

42 (Try to prove it′s not...)

$$\mathrm{42} \\ $$$$\left(\mathrm{Try}\:\mathrm{to}\:\mathrm{prove}\:\mathrm{it}'\mathrm{s}\:\mathrm{not}...\right) \\ $$

Commented by Shrinava last updated on 25/Jan/23

How can you prove something that doesn′t exist?

$$\mathrm{How}\:\mathrm{can}\:\mathrm{you}\:\mathrm{prove}\:\mathrm{something}\:\mathrm{that} \\ $$$$\mathrm{doesn}'\mathrm{t}\:\mathrm{exist}? \\ $$

Commented by Shrinava last updated on 25/Jan/23

71 + 1 ∙ 7 = 78 87 + 7 ∙ 8 = 143 341 + 1 ∙ 4 ∙ 3 = 353 353 + 3 ∙ 5 ∙ 3 = ? = 398 ⇒ b)398

$$\mathrm{71}\:+\:\mathrm{1}\:\centerdot\:\mathrm{7}\:=\:\mathrm{78} \\ $$$$\mathrm{87}\:+\:\mathrm{7}\:\centerdot\:\mathrm{8}\:=\:\mathrm{143} \\ $$$$\mathrm{341}\:+\:\mathrm{1}\:\centerdot\:\mathrm{4}\:\centerdot\:\mathrm{3}\:=\:\mathrm{353} \\ $$$$\left.\mathrm{353}\:+\:\mathrm{3}\:\centerdot\:\mathrm{5}\:\centerdot\:\mathrm{3}\:=\:?\:=\:\mathrm{398}\:\Rightarrow\:\mathrm{b}\right)\mathrm{398} \\ $$

Commented by mr W last updated on 25/Jan/23

guess what an other man or woman thinks, this has nothing to do with mathematics and with intellegence, at most just a stupid game. can you say what′s the next number? 1,2,3,4,?

$${guess}\:{what}\:{an}\:{other}\:{man}\:{or}\:{woman} \\ $$$${thinks},\:{this}\:{has}\:{nothing}\:{to}\:{do}\:{with} \\ $$$${mathematics}\:{and}\:{with}\:{intellegence}, \\ $$$${at}\:{most}\:{just}\:{a}\:{stupid}\:{game}. \\ $$$${can}\:{you}\:{say}\:{what}'{s}\:{the}\:{next}\:{number}? \\ $$$$\mathrm{1},\mathrm{2},\mathrm{3},\mathrm{4},? \\ $$

Commented by Shrinava last updated on 25/Jan/23

Of course yes you are correct dear professor... For example: 1,2,3,4,5,8,?,? ⇒1,2_(2^1 ) ,3,4_(2^2 ) ,5,8_(2^3 ) ,7,16_(2^4 ) ⇒ a_n = { ((n if n is odd)),((2^(n/2) if n is even)) :} ⇒ a_n = ?

$$\mathrm{Of}\:\mathrm{course}\:\mathrm{yes}\:\mathrm{you}\:\mathrm{are}\:\mathrm{correct}\:\:\mathrm{dear}\:\mathrm{professor}... \\ $$$$\mathrm{For}\:\mathrm{example}: \\ $$$$\mathrm{1},\mathrm{2},\mathrm{3},\mathrm{4},\mathrm{5},\mathrm{8},?,? \\ $$$$\Rightarrow\mathrm{1},\underset{\mathrm{2}^{\mathrm{1}} } {\mathrm{2}},\mathrm{3},\underset{\mathrm{2}^{\mathrm{2}} } {\mathrm{4}},\mathrm{5},\underset{\mathrm{2}^{\mathrm{3}} } {\mathrm{8}},\underline{\mathrm{7},\underset{\mathrm{2}^{\mathrm{4}} } {\mathrm{16}}} \\ $$$$\Rightarrow\:\mathrm{a}_{\boldsymbol{\mathrm{n}}} =\begin{cases}{\mathrm{n}\:\:\mathrm{if}\:\:\mathrm{n}\:\:\mathrm{is}\:\mathrm{odd}}\\{\mathrm{2}^{\frac{\boldsymbol{\mathrm{n}}}{\mathrm{2}}} \:\:\mathrm{if}\:\:\mathrm{n}\:\:\mathrm{is}\:\mathrm{even}}\end{cases}\:\:\:\Rightarrow\:\:\:\mathrm{a}_{\boldsymbol{\mathrm{n}}} \:=\:? \\ $$

Commented by mr W last updated on 26/Jan/23

wrong! because i meant 1,2,3,4,10,11,12,13,14,20,21,... therefore such questions are purely non−sense.

$${wrong}!\:{because}\:{i}\:{meant} \\ $$$$\mathrm{1},\mathrm{2},\mathrm{3},\mathrm{4},\mathrm{10},\mathrm{11},\mathrm{12},\mathrm{13},\mathrm{14},\mathrm{20},\mathrm{21},... \\ $$$${therefore}\:{such}\:{questions}\:{are}\:{purely} \\ $$$${non}−{sense}. \\ $$

Commented by Rajpurohith last updated on 26/Jan/23

assume that it exists and try to disprove ur assumption

Terms of Service

Privacy Policy

Contact: info@tinkutara.com