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Two-buses-start-from-a-point-such-that-one-bus-travelling-at-80-km-h-reaches-its-destination-2-hours-before-the-other-bus-which-travels-at-60-km-h-However-the-distance-travelled-by-the-bus-travelling

Question Number 99366 by PengagumRahasiamu last updated on 20/Jun/20 $$\mathrm{Two}\:\mathrm{buses}\:\mathrm{start}\:\mathrm{from}\:\mathrm{a}\:\mathrm{point}\:\mathrm{such}\:\mathrm{that} \\ $$$$\mathrm{one}\:\mathrm{bus}\:\mathrm{travelling}\:\mathrm{at}\:\mathrm{80}\:\mathrm{km}/\mathrm{h}\:\mathrm{reaches} \\ $$$$\mathrm{its}\:\mathrm{destination}\:\mathrm{2}\:\mathrm{hours}\:\mathrm{before}\:\mathrm{the}\:\mathrm{other} \\ $$$$\mathrm{bus}\:\mathrm{which}\:\mathrm{travels}\:\mathrm{at}\:\mathrm{60}\:\mathrm{km}/\mathrm{h}.\:\mathrm{However} \\ $$$$\mathrm{the}\:\mathrm{distance}\:\mathrm{travelled}\:\mathrm{by}\:\mathrm{the}\:\mathrm{bus} \\ $$$$\mathrm{travelling}\:\mathrm{at}\:\mathrm{60}\:\mathrm{km}/\mathrm{h}\:\mathrm{is}\:\mathrm{40}\:\mathrm{km}\:\mathrm{more}\:\mathrm{than} \\ $$$$\mathrm{that}\:\mathrm{of}\:\mathrm{the}\:\mathrm{other}\:\mathrm{bus}.\:\mathrm{Find}\:\mathrm{the}\:\mathrm{distance} \\ $$$$\mathrm{travelled}\:\mathrm{by}\:\mathrm{the}\:\mathrm{bus}\:\mathrm{which}\:\mathrm{is}\:\mathrm{travelling} \\…

15-men-can-complete-a-work-in-10-days-working-8-hrs-per-day-How-many-persons-are-required-to-complete-double-the-work-in-25-days-working-6-hrs-per-day-

Question Number 99358 by PengagumRahasiamu last updated on 20/Jun/20 $$\mathrm{15}\:\mathrm{men}\:\mathrm{can}\:\mathrm{complete}\:\mathrm{a}\:\mathrm{work}\:\mathrm{in}\:\mathrm{10}\:\mathrm{days}, \\ $$$$\mathrm{working}\:\mathrm{8}\:\mathrm{hrs}.\:\mathrm{per}\:\mathrm{day}.\:\mathrm{How}\:\mathrm{many} \\ $$$$\mathrm{persons}\:\mathrm{are}\:\mathrm{required}\:\mathrm{to}\:\mathrm{complete} \\ $$$$\mathrm{double}\:\mathrm{the}\:\mathrm{work}\:\mathrm{in}\:\mathrm{25}\:\mathrm{days},\:\mathrm{working} \\ $$$$\mathrm{6}\:\mathrm{hrs}.\:\mathrm{per}\:\mathrm{day}? \\ $$ Commented by john santu last…

log-3-2-log-6-2-log-12-2-are-in-

Question Number 99352 by 659083337 last updated on 20/Jun/20 $$\mathrm{log}_{\mathrm{3}} \mathrm{2},\:\:\mathrm{log}_{\mathrm{6}} \mathrm{2},\:\:\mathrm{log}_{\mathrm{12}} \mathrm{2}\:\:\:\mathrm{are}\:\mathrm{in} \\ $$ Answered by 4635 last updated on 20/Jun/20 $$.\mathrm{log}\:_{\mathrm{3}} \mathrm{2}=\frac{\mathrm{ln}\:\mathrm{2}}{\mathrm{ln}\:\mathrm{3}}\:,.\mathrm{log}\:_{\mathrm{6}} \mathrm{2}=\frac{\mathrm{ln}\:\mathrm{2}}{\mathrm{ln}\:\mathrm{2}+\mathrm{ln}\:\mathrm{3}}…

The-sum-of-n-terms-of-the-series-1-2-2-2-3-2-4-2-5-2-6-2-is-

Question Number 99351 by 659083337 last updated on 20/Jun/20 $$\mathrm{The}\:\mathrm{sum}\:\mathrm{of}\:{n}\:\mathrm{terms}\:\mathrm{of}\:\mathrm{the}\:\mathrm{series}\: \\ $$$$\mathrm{1}^{\mathrm{2}} \:−\:\mathrm{2}^{\mathrm{2}} \:+\:\mathrm{3}^{\mathrm{2}} \:−\:\mathrm{4}^{\mathrm{2}} \:+\:\mathrm{5}^{\mathrm{2}} \:−\:\mathrm{6}^{\mathrm{2}} \:+….\:\mathrm{is} \\ $$ Commented by I want to…

If-the-equation-2x-2-14x-15-0-is-divided-by-x-4-the-remainder-is-

Question Number 33789 by wath trine last updated on 24/Apr/18 $$\mathrm{If}\:\mathrm{the}\:\mathrm{equation}\:\:\mathrm{2}{x}^{\mathrm{2}} +\mathrm{14}{x}−\mathrm{15}=\mathrm{0}\:\mathrm{is} \\ $$$$\mathrm{divided}\:\mathrm{by}\:\left({x}−\mathrm{4}\right),\:\mathrm{the}\:\mathrm{remainder}\:\mathrm{is} \\ $$ Answered by MJS last updated on 25/Apr/18 $$\left(\mathrm{2}{x}^{\mathrm{2}} +\mathrm{14}{x}−\mathrm{15}\right)/\left({x}−\mathrm{4}\right)=\mathrm{2}{x}…

A-bag-contains-4-tickets-numbered-1-2-3-4-and-another-bag-contains-6-tickets-numbered-2-4-6-7-8-9-One-bag-is-chosen-and-a-ticket-is-drawn-The-probability-that-the-ticket-bears-the-number-4-

Question Number 99225 by BigBoss last updated on 19/Jun/20 $$\mathrm{A}\:\mathrm{bag}\:\mathrm{contains}\:\mathrm{4}\:\mathrm{tickets}\:\mathrm{numbered}\:\mathrm{1},\:\mathrm{2}, \\ $$$$\mathrm{3},\:\mathrm{4}\:\mathrm{and}\:\mathrm{another}\:\mathrm{bag}\:\mathrm{contains}\:\mathrm{6}\:\mathrm{tickets} \\ $$$$\mathrm{numbered}\:\:\mathrm{2},\:\mathrm{4},\:\mathrm{6},\:\mathrm{7},\:\mathrm{8},\:\mathrm{9}.\:\mathrm{One}\:\mathrm{bag}\:\mathrm{is} \\ $$$$\mathrm{chosen}\:\mathrm{and}\:\mathrm{a}\:\mathrm{ticket}\:\mathrm{is}\:\mathrm{drawn}.\:\mathrm{The} \\ $$$$\mathrm{probability}\:\mathrm{that}\:\mathrm{the}\:\mathrm{ticket}\:\mathrm{bears}\:\mathrm{the} \\ $$$$\mathrm{number}\:\mathrm{4}\:\mathrm{is} \\ $$ Answered by john…

The-probability-that-in-a-random-arrangement-of-the-letters-of-the-word-UNIVERSITY-the-two-I-do-not-come-together-is-

Question Number 99141 by babar last updated on 18/Jun/20 $$\mathrm{The}\:\mathrm{probability}\:\mathrm{that}\:\mathrm{in}\:\mathrm{a}\:\mathrm{random} \\ $$$$\mathrm{arrangement}\:\mathrm{of}\:\mathrm{the}\:\mathrm{letters}\:\mathrm{of}\:\mathrm{the}\:\mathrm{word} \\ $$$$'\mathrm{UNIVERSITY}'\:\mathrm{the}\:\mathrm{two}\:\mathrm{I}'\:\mathrm{do}\:\mathrm{not}\:\mathrm{come} \\ $$$$\mathrm{together}\:\mathrm{is} \\ $$ Answered by bramlex last updated on 19/Jun/20…

If-4-dice-are-thrown-together-then-the-probability-that-the-sum-of-the-numbers-appearing-on-them-is-13-is-

Question Number 99142 by babar last updated on 18/Jun/20 $$\mathrm{If}\:\mathrm{4}\:\mathrm{dice}\:\mathrm{are}\:\mathrm{thrown}\:\mathrm{together},\:\mathrm{then}\:\mathrm{the} \\ $$$$\mathrm{probability}\:\mathrm{that}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{the}\:\mathrm{numbers} \\ $$$$\mathrm{appearing}\:\mathrm{on}\:\mathrm{them}\:\mathrm{is}\:\mathrm{13},\:\mathrm{is} \\ $$ Answered by 1549442205 last updated on 19/Jun/20 $$\mathrm{The}\:\mathrm{possibilities}\:\mathrm{to}\:\mathrm{success}\:\:\mathrm{are}\:\left(\mathrm{1},\mathrm{2},\mathrm{4},\mathrm{6}\right), \\…

If-A-and-B-are-independent-events-and-P-C-0-then-

Question Number 99138 by babar last updated on 18/Jun/20 $$\mathrm{If}\:{A}\:\mathrm{and}\:{B}\:\mathrm{are}\:\mathrm{independent}\:\mathrm{events}\:\mathrm{and} \\ $$$${P}\left({C}\right)=\mathrm{0},\:\mathrm{then} \\ $$ Answered by Rio Michael last updated on 19/Jun/20 $$\mathrm{for}\:\mathrm{independent}\:\mathrm{events},\:{P}\left({A}\:\cap\:{B}\right)\:=\:{P}\left({A}\right)×{P}\left({B}\right) \\ $$$$\mathrm{but}\:{P}\:\left({C}\:'\right)\:=\:\mathrm{0}\:\Rightarrow\:{P}\left({C}\right)\:=\:\mathrm{1}.\:…

One-ticket-is-selected-at-random-from-100-tickets-numbered-00-01-02-99-Suppose-A-and-B-are-the-sum-and-product-of-the-digit-found-on-the-ticket-Then-P-A-7-B-0-is-given-by-

Question Number 99139 by babar last updated on 18/Jun/20 $$\mathrm{One}\:\mathrm{ticket}\:\mathrm{is}\:\mathrm{selected}\:\mathrm{at}\:\mathrm{random}\:\mathrm{from} \\ $$$$\mathrm{100}\:\mathrm{tickets}\:\mathrm{numbered}\:\mathrm{00},\:\mathrm{01},\:\mathrm{02},\:…,\:\mathrm{99} \\ $$$$\mathrm{Suppose}\:{A}\:\mathrm{and}\:{B}\:\mathrm{are}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{and}\: \\ $$$$\mathrm{product}\:\mathrm{of}\:\mathrm{the}\:\mathrm{digit}\:\mathrm{found}\:\mathrm{on}\:\mathrm{the}\:\mathrm{ticket}. \\ $$$$\mathrm{Then}\:{P}\:\left({A}\:=\:\mathrm{7}/{B}=\:\mathrm{0}\right)\:\mathrm{is}\:\mathrm{given}\:\mathrm{by} \\ $$ Answered by 1549442205 last updated…