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The-arithmetic-mean-between-two-numbers-is-A-and-S-is-the-sum-of-n-arithmetic-means-between-these-numbers-then-

Question Number 82540 by zainal tanjung last updated on 22/Feb/20 $$\mathrm{The}\:\mathrm{arithmetic}\:\mathrm{mean}\:\mathrm{between}\:\mathrm{two}\:\mathrm{numbers} \\ $$$$\mathrm{is}\:{A},\:\mathrm{and}\:{S}\:\mathrm{is}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:{n}\:\mathrm{arithmetic}\:\mathrm{means} \\ $$$$\mathrm{between}\:\mathrm{these}\:\mathrm{numbers},\:\mathrm{then} \\ $$ Answered by TANMAY PANACEA last updated on 22/Feb/20…

If-15-men-or-24-women-or-36-boys-do-a-piece-of-work-in-12-days-working-8-hours-a-day-how-many-men-must-associated-with-12-women-and-6-boys-to-do-another-piece-of-work-2-1-4-times-as-great-in-30-da

Question Number 16983 by aamaguestt last updated on 29/Jun/17 $$\mathrm{If}\:\mathrm{15}\:\mathrm{men}\:\mathrm{or}\:\mathrm{24}\:\mathrm{women}\:\mathrm{or}\:\mathrm{36}\:\mathrm{boys}\:\mathrm{do}\:\mathrm{a}\: \\ $$$$\mathrm{piece}\:\mathrm{of}\:\mathrm{work}\:\mathrm{in}\:\mathrm{12}\:\mathrm{days},\:\mathrm{working}\:\mathrm{8}\:\mathrm{hours} \\ $$$$\mathrm{a}\:\mathrm{day},\:\mathrm{how}\:\mathrm{many}\:\mathrm{men}\:\mathrm{must}\:\mathrm{associated} \\ $$$$\mathrm{with}\:\mathrm{12}\:\mathrm{women}\:\mathrm{and}\:\mathrm{6}\:\mathrm{boys}\:\mathrm{to}\:\mathrm{do}\:\mathrm{another} \\ $$$$\mathrm{piece}\:\mathrm{of}\:\mathrm{work}\:\mathrm{2}\frac{\mathrm{1}}{\mathrm{4}}\:\mathrm{times}\:\mathrm{as}\:\mathrm{great}\:\mathrm{in}\:\mathrm{30} \\ $$$$\mathrm{days}\:\mathrm{working}\:\mathrm{6}\:\mathrm{hrs}\:\mathrm{a}\:\mathrm{day}? \\ $$ Answered by ajfour…

1-2-1-2-x-cos-pix-2-dx-

Question Number 82474 by zainal tanjung last updated on 21/Feb/20 $$\underset{−\mathrm{1}/\mathrm{2}} {\overset{\mathrm{1}/\mathrm{2}} {\int}}\:\mid\:{x}\:\mathrm{cos}\left(\frac{\pi{x}}{\mathrm{2}}\right)\mid\:{dx}\:= \\ $$ Commented by mathmax by abdo last updated on 21/Feb/20 $${let}\:{I}\:=\int_{−\frac{\mathrm{1}}{\mathrm{2}}}…

If-x-y-z-are-pth-qth-and-rth-terms-respectively-of-an-AP-and-also-of-GP-then-x-y-z-y-z-x-z-x-y-is-equal-to-

Question Number 16707 by myaoo5678 last updated on 25/Jun/17 $$\mathrm{If}\:\:{x},\:{y},\:{z}\:\mathrm{are}\:{p}\mathrm{th},\:{q}\mathrm{th}\:\mathrm{and}\:{r}\mathrm{th}\:\mathrm{terms}\:\mathrm{respectively}, \\ $$$$\mathrm{of}\:\mathrm{an}\:\mathrm{AP}\:\mathrm{and}\:\mathrm{also}\:\mathrm{of}\:\mathrm{GP},\:\mathrm{then}\: \\ $$$${x}^{{y}−{z}} \:{y}^{{z}−{x}} \:{z}^{{x}−{y}} \:\mathrm{is}\:\mathrm{equal}\:\mathrm{to} \\ $$ Answered by Tinkutara last updated on…

If-tan-2-2-tan-2-1-then-cos-2-sin-2-equals-

Question Number 16485 by 09798887650 last updated on 23/Jun/17 $$\mathrm{If}\:\mathrm{tan}^{\mathrm{2}} \theta=\mathrm{2}\:\mathrm{tan}^{\mathrm{2}} \phi+\mathrm{1},\:\mathrm{then}\:\mathrm{cos}\:\mathrm{2}\theta+\mathrm{sin}^{\mathrm{2}} \phi \\ $$$$\mathrm{equals} \\ $$ Answered by Tinkutara last updated on 23/Jun/17 $$\mathrm{cos}\:\mathrm{2}\theta\:=\:\frac{\mathrm{1}\:−\:\mathrm{tan}^{\mathrm{2}}…

The-sixth-term-of-an-AP-is-2-and-its-common-difference-is-greater-than-one-The-value-of-the-common-difference-of-the-progression-so-that-the-product-of-the-first-fourth-and-fifth-terms-is-greatest-

Question Number 16451 by myaoo last updated on 22/Jun/17 $$\mathrm{The}\:\mathrm{sixth}\:\mathrm{term}\:\mathrm{of}\:\mathrm{an}\:\mathrm{AP}\:\mathrm{is}\:\mathrm{2},\:\mathrm{and}\:\mathrm{its} \\ $$$$\mathrm{common}\:\mathrm{difference}\:\mathrm{is}\:\mathrm{greater}\:\mathrm{than}\:\mathrm{one}. \\ $$$$\mathrm{The}\:\mathrm{value}\:\mathrm{of}\:\mathrm{the}\:\mathrm{common}\:\mathrm{difference}\:\mathrm{of} \\ $$$$\mathrm{the}\:\mathrm{progression}\:\mathrm{so}\:\mathrm{that}\:\mathrm{the}\:\mathrm{product}\:\mathrm{of}\:\mathrm{the} \\ $$$$\mathrm{first},\:\mathrm{fourth}\:\mathrm{and}\:\mathrm{fifth}\:\mathrm{terms}\:\mathrm{is}\:\mathrm{greatest}\:\mathrm{is} \\ $$ Terms of Service Privacy Policy…

3-cubes-of-metal-whose-edges-are-3-4-and-5-respectively-are-melted-and-formed-into-a-single-cube-If-there-be-no-loss-of-metal-in-the-process-find-the-side-of-the-new-cube-

Question Number 16419 by Mr easymsn last updated on 21/Jun/17 $$\mathrm{3}\:\mathrm{cubes}\:\mathrm{of}\:\mathrm{metal}\:\mathrm{whose}\:\mathrm{edges}\:\mathrm{are}\:\mathrm{3},\mathrm{4} \\ $$$$\mathrm{and}\:\mathrm{5}\:\mathrm{respectively}\:\mathrm{are}\:\mathrm{melted}\:\mathrm{and} \\ $$$$\mathrm{formed}\:\mathrm{into}\:\mathrm{a}\:\mathrm{single}\:\mathrm{cube}.\:\mathrm{If}\:\mathrm{there}\:\mathrm{be} \\ $$$$\mathrm{no}\:\mathrm{loss}\:\mathrm{of}\:\mathrm{metal}\:\mathrm{in}\:\mathrm{the}\:\mathrm{process}\:\mathrm{find} \\ $$$$\mathrm{the}\:\mathrm{side}\:\mathrm{of}\:\mathrm{the}\:\mathrm{new}\:\mathrm{cube}. \\ $$ Answered by Tinkutara last…

A-solid-sphere-of-radius-4-cm-is-melted-and-recast-into-n-solid-hemispheres-of-radius-2-cm-each-Find-n-

Question Number 16418 by Mr easymsn last updated on 21/Jun/17 $$\mathrm{A}\:\mathrm{solid}\:\mathrm{sphere}\:\mathrm{of}\:\mathrm{radius}\:\mathrm{4}\:\mathrm{cm}\:\mathrm{is}\:\mathrm{melted} \\ $$$$\mathrm{and}\:\mathrm{recast}\:\mathrm{into}\:'{n}'\:\mathrm{solid}\:\mathrm{hemispheres}\:\mathrm{of} \\ $$$$\mathrm{radius}\:\mathrm{2}\:\mathrm{cm}\:\mathrm{each}.\:\mathrm{Find}\:{n}. \\ $$ Answered by Tinkutara last updated on 22/Jun/17 $$\mathrm{Volume}\:\mathrm{of}\:\mathrm{solid}\:\mathrm{sphere}\:=\:\mathrm{Volume}\:\mathrm{of}\:{n}…

One-man-adds-3-litres-of-water-to-12-litres-of-milk-and-another-4-litres-of-water-to-10-litres-of-milk-What-is-the-ratio-of-the-strengths-of-milk-in-the-two-mixtures-

Question Number 81927 by zainal tanjung last updated on 16/Feb/20 $$\mathrm{One}\:\mathrm{man}\:\mathrm{adds}\:\mathrm{3}\:\mathrm{litres}\:\mathrm{of}\:\mathrm{water}\:\mathrm{to}\:\mathrm{12}\:\mathrm{litres}\:\mathrm{of}\:\mathrm{milk} \\ $$$$\mathrm{and}\:\mathrm{another}\:\mathrm{4}\:\mathrm{litres}\:\mathrm{of}\:\mathrm{water}\:\mathrm{to}\:\mathrm{10}\:\mathrm{litres}\:\mathrm{of}\:\mathrm{milk}. \\ $$$$\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{ratio}\:\mathrm{of}\:\mathrm{the}\:\mathrm{strengths}\:\mathrm{of}\:\mathrm{milk}\:\mathrm{in}\:\mathrm{the} \\ $$$$\mathrm{two}\:\mathrm{mixtures}? \\ $$ Answered by TANMAY PANACEA last updated…