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Question Number 160219 by vvvv last updated on 26/Nov/21 $$\underset{\boldsymbol{{k}}=\mathrm{1}} {\overset{{n}} {\sum}}\underset{\boldsymbol{{i}}=\mathrm{1}} {\overset{{m}} {\prod}}\left(\boldsymbol{{i}}^{\mathrm{2}} −\boldsymbol{{k}}\right)\boldsymbol{{k}}^{\mathrm{4}} \\ $$$$\boldsymbol{\mathrm{how}}\:\boldsymbol{\mathrm{to}}\:\boldsymbol{{solving}}\:\boldsymbol{\mathrm{is}}\:\boldsymbol{\mathrm{programming}}\:\:\boldsymbol{\mathrm{C}}++ \\ $$ Terms of Service Privacy Policy Contact:…

App-updates-Improvement-in-handling-image-upload-and-display-small-width-large-height-cases-Editor-can-be-opened-in-landscape-mode-Added-ability-to-save-thread-to-device-S

Question Number 94664 by Tinku Tara last updated on 20/May/20 $$\mathrm{App}\:\mathrm{updates}: \\ $$$$\bullet\:\mathrm{Improvement}\:\mathrm{in}\:\mathrm{handling}\:\mathrm{image} \\ $$$$\:\:\:\:\mathrm{upload}\:\mathrm{and}\:\mathrm{display}\:\left(\mathrm{small}\:\mathrm{width},\right. \\ $$$$\left.\:\:\:\:\mathrm{large}\:\mathrm{height}\:\mathrm{cases}\right) \\ $$$$\bullet\:\mathrm{Editor}\:\mathrm{can}\:\mathrm{be}\:\mathrm{opened}\:\mathrm{in}\:\mathrm{landscape} \\ $$$$\:\:\:\:\mathrm{mode}. \\ $$$$\bullet\:\mathrm{Added}\:\mathrm{ability}\:\mathrm{to}\:\mathrm{save}\:\mathrm{thread}\:\mathrm{to} \\ $$$$\:\:\:\:\mathrm{device}.\:'\mathrm{Save}\:\mathrm{to}\:\mathrm{Device}'…

Find-the-sum-of-all-triples-x-y-z-x-lt-y-lt-z-such-that-x-y-z-z-y-y-x-z-x-are-all-prime-positive-integers-First-sum-all-the-triples-individually-then-summ-all-the-sums-

Question Number 160141 by abdullah_ff last updated on 25/Nov/21 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{all}\:\mathrm{triples} \\ $$$$\left({x},\:{y},\:{z}\:;\:\left({x}<{y}<{z}\right)\right)\:\mathrm{such}\:\mathrm{that}\:{x},\:{y},\:{z}, \\ $$$${z}−{y},\:{y}−{x},\:{z}−{x}\:\mathrm{are}\:\mathrm{all}\:\mathrm{prime}\:\mathrm{positive} \\ $$$$\mathrm{integers}.\:\left(\mathrm{First}\:\mathrm{sum}\:\mathrm{all}\:\mathrm{the}\:\mathrm{triples}\right. \\ $$$$\left.\mathrm{individually},\:\mathrm{then}\:\mathrm{summ}\:\mathrm{all}\:\mathrm{the}\:\mathrm{sums}.\right) \\ $$ Answered by Rasheed.Sindhi last updated…

The-nucleus-of-a-certain-atom-has-mass-of-3-8-10-25-and-is-at-rest-The-nucleus-is-radioactive-and-suddenly-eject-from-its-self-a-particle-of-mass-6-6-10-27-kg-and-speed-1-5-10-3-m-s-Find-the

Question Number 160138 by otchereabdullai@gmail.com last updated on 25/Nov/21 $$\mathrm{The}\:\mathrm{nucleus}\:\mathrm{of}\:\mathrm{a}\:\mathrm{certain}\:\mathrm{atom}\:\mathrm{has} \\ $$$$\mathrm{mass}\:\mathrm{of}\:\mathrm{3}.\mathrm{8}×\mathrm{10}^{−\mathrm{25}\:} \mathrm{and}\:\mathrm{is}\:\mathrm{at}\:\mathrm{rest}.\:\mathrm{The} \\ $$$$\mathrm{nucleus}\:\mathrm{is}\:\mathrm{radioactive}\:\mathrm{and}\:\mathrm{suddenly} \\ $$$$\mathrm{eject}\:\mathrm{from}\:\mathrm{its}\:\mathrm{self},\:\mathrm{a}\:\mathrm{particle}\:\mathrm{of}\:\mathrm{mass} \\ $$$$\mathrm{6}.\mathrm{6}×\mathrm{10}^{−\mathrm{27}} \mathrm{kg}\:\mathrm{and}\:\mathrm{speed}\:\mathrm{1}.\mathrm{5}×\mathrm{10}^{\mathrm{3}} \mathrm{m}/\mathrm{s}. \\ $$$$\mathrm{Find}\:\mathrm{the}\:\mathrm{recoil}\:\mathrm{speed}\:\mathrm{of}\:\mathrm{the}\:\mathrm{nucleus} \\ $$$$\mathrm{as}\:\mathrm{is}\:\mathrm{left}\:\mathrm{behind}.…