6道小升初英语数学题,哪位大虾能帮忙解答一下?1.IfIclimbastaircase2stepsatatime,onestepisleftover.Climbing3stepsatatimegives2stepsleftover,whileclimbing4atatimegives3leftover.Howmanystepsareth
6道小升初英语数学题,哪位大虾能帮忙解答一下?
1.IfIclimbastaircase2stepsatatime,onestepisleftover.Climbing3stepsatatimegives2stepsleftover,whileclimbing4atatimegives3leftover.Howmanystepsarethereiftherearefewerthan20?(翻译、过程、答案)
2.Whatisthe100thterminthesequence0,2,6,12,20,30,42,...?(过程、答案)
3.Findthevalueofthisproductof98numbers:(1-2/3)(1-2/4)(1-2/5)……(1-2/98)(1-2/99)(1-2/100)?(过程、答案)
4.Thedigitintheonesplaceofatwo--digitnumberistwomorethanthreetimesthedigitinthetensplace.Ifthedigitsarereverse,thenewnumberistwolessthanthreetimestheoriginalnumber.Findtheoriginalnumber.(翻译、过程、答案)
5.Asetof10numbershassum100.Eachnumberofthesetisincreasedby20,thenmultipliedby20thendecreasedby20.Whatisthesumofthenumbersinthenewset?(过程、答案)
6.Theareasofthefacesofarectangularboxare84cm2,70cm2and30cm2.Thevolumeoftheboxincm3is____.(过程、答案)
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