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Author: Tinku Tara

proof-or-give-a-counter-example-if-nm-is-prime-then-mdc-n-2-m-2-1-

Question Number 472 by 123456 last updated on 25/Jan/15 $${proof}\:{or}\:{give}\:{a}\:{counter}−{example}: \\ $$$${if}\:{nm}\:{is}\:{prime}\:{then}\:\mathrm{mdc}\left({n}^{\mathrm{2}} ,{m}^{\mathrm{2}} \right)=\mathrm{1} \\ $$ Answered by prakash jain last updated on 10/Jan/15 $$\mathrm{If}\:{n},{m}\:\in\mathbb{Z}\:\mathrm{then}\:{n}=\mathrm{1}\:\mathrm{or}\:{m}=\mathrm{1}…

A-particle-moves-with-a-central-acceration-varies-as-the-cube-of-the-distance-if-it-be-projected-from-an-apse-at-distance-a-from-the-origin-with-a-velocity-which-is-2-times-the-velocity-for-a-c

Question Number 465 by shubham last updated on 09/Jan/15 $${A}\:{particle}\:{moves}\:{with}\:{a}\:{central}\:{acceration}\:{varies}\:{as}\:{the}\:{cube}\:{of}\:{the}\:{distance}.\:{if}\:{it}\:{be}\:{projected}\:{from}\:{an}\:{apse}\:{at}\:{distance}\:{a}\:{from}\:{the}\:{origin}\:{with}\:{a}\:{velocity}\:{which}\:{is}\:\sqrt{\mathrm{2}\:}\:{times}\:{the}\:{velocity}\:{for}\:{a}\:{circle}\:{of}\:{radius}\:{a}.\:{show}\:{that}\:{the}\:{equation}\:{of}\:{path}\:{is}\:{its}\:{r}\mathrm{cos}\theta/\sqrt{\mathrm{2}}\:=\:{a} \\ $$ Commented by prakash jain last updated on 09/Jan/15 $$\mathrm{Reformatted} \\ $$$${A}\:{particle}\:{moves}\:{with}\:{a}\:{central} \\ $$$${acceration}\:{varies}\:{as}\:{the}\:{cube}\:…

Question-131534

Question Number 131534 by mr W last updated on 06/Feb/21 Commented by mr W last updated on 05/Feb/21 $${find}\:{the}\:{radii}\:{of}\:{the}\:{inscribing}\:{and} \\ $$$${the}\:{circumscribing}\:{sphere}\:{of}\:{a} \\ $$$${tetrahedron}\:{with}\:{edge}\:{lengthes}\:{a},{b},{c}, \\ $$$${p},{q},{r}\:{as}\:{shown}.…