Category: Logic

Question Number 92687 by Ar Brandon last updated on 08/May/20 $$\mathrm{In}\mathrm{a}\mathrm{Gregorian}\mathrm{calendar},\mathrm{a}\mathrm{year}\mathrm{finishing}\mathrm{with}$$$$00\mathrm{is}\mathrm{a}\mathrm{leap}\mathrm{year}\mathrm{if}\mathrm{only}{\mathrm{it}}^{\prime }\mathrm{s}\mathrm{vintage}\mathrm{is}\mathrm{divisible}$$$$\mathrm{by}400.\mathrm{Also},\mathrm{the}{1}^{\mathrm{st}}\mathrm{January}1900\mathrm{was}\mathrm{a}$$$$\mathrm{Monday}.$$$$1\mathrm{\setminus }\mathrm{Show}\mathrm{that}\mathrm{a}\mathrm{year}\mathrm{with}\mathrm{the}\mathrm{vintage}\mathrm{finishing}\mathrm{with}$$$$00\mathrm{cannot}\mathrm{begin}\mathrm{on}\mathrm{a}\mathrm{Sunday}$$$$\mathrm{2}\backslash\:\mathrm{Show}\:\mathrm{that}\:\mathrm{for}\:\mathrm{a}\:\mathrm{person}\:\mathrm{born}\:\mathrm{between}\:\mathrm{1900}−\mathrm{2071}, \…

Question Number 157887 by Tawa11 last updated on 29/Oct/21 Commented by Tawa11 last updated on 29/Oct/21 $$\mathrm{Proof}\mathrm{please}$$ Commented by Rasheed.Sindhi last updated on…

Question Number 90801 by john santu last updated on 26/Apr/20 $$whatarethenexttwonumber$$$$ofthisseries4,7,9,2,5,6,3,8?$$ Commented by MJS last updated on 26/Apr/20 $${a}_{{n}} =−\frac{\mathrm{17}}{\mathrm{630}}{n}^{\mathrm{7}} +\frac{\mathrm{643}}{\mathrm{720}}{n}^{\mathrm{6}}…

Question Number 90233 by jagoll last updated on 22/Apr/20 $$3,4,12,39,103,\mathrm{x}$$$$\left(\mathrm{a}\right)164$$$$\left(\mathrm{b}\right)170$$$$\left(\mathrm{c}\right)172$$$$\left(\mathrm{d}\right)228$$ Commented by john santu last…

Question Number 24211 by Physics lover last updated on 14/Nov/17 Commented by Physics lover last updated on 14/Nov/17 $$Thefigureshowsamercury$$$$barometer.$$$$findreadingoftheweighing$$$${machine}.\:{Density}\:{of}\:{mercury}…