首页
登录
职称英语
The buyer of a certain mechanical toy must choose 2 of 4 optional motions and 4
The buyer of a certain mechanical toy must choose 2 of 4 optional motions and 4
游客
2025-02-24
15
管理
问题
The buyer of a certain mechanical toy must choose 2 of 4 optional motions and 4 of 5 optional accessories. How many different combinations of motions and accessories are available to the buyer?
选项
A、8
B、11
C、15
D、20
E、30
答案
E
解析
一购买机械玩具的顾客必须从4个可选择的机械装置中选择2个,且从5个附件中选择4个,问共有多少种不同机构装置和附件的组合可供这个顾客选择?
解:本题的正确答案为(E)。总的组合数为
转载请注明原文地址:https://www.tihaiku.com/zcyy/3971423.html
相关试题推荐
Thebuyerofacertainmechanicaltoymustchoose2of4optionalmotionsand4
Aresearchscientistwantstostudyacertainattributeofdogs.Itisestimated
Thealtitudeofacertaintriangularsailis2metersgreaterinlengththanits
Acertainmoneymarketaccountthathadabalanceof$48,000duringalloflast
Acertainrectanglehasperimeter54.Iftheratioofthelengthoftherectangl
Thescoresreportedforacertainmultiple-choicetestwerederivedbysubtracti
Thecost,indollars,foranappliancerepairatacertaincompanyis1.2p+20h
Inacertainroom,allexcept18ofthepeopleareover50yearsofage.If15o
Theoddsthatacertaineventwilloccuristheratiooftheprobabilitythatth
Ifacertaincompanypurchaseditscomputerterminalsforatotalof$540,400an
随机试题
Apeculiarlypointedchinishismostmemorablefacial______.A、mark.B、feature
[originaltext]W:IwassoexcitedthatIcouldn’tfallasleeplastnight.M:I
[originaltext]M:MrsHunt,areyousureitisthemanwhoyousawinlastnight
Wecouldn’t________theoldladytotravelbyair,sowehadtodrivefor20hour
患儿女,10岁,发热伴咽痛1天,拟诊为上呼吸道感染。次日体温上升至39℃,面红,
本案例中,居民委员会主任动员李奶奶的左邻右舍去家里陪伴她,这样做的主要目的是(
在巨大的市场驱动下,国内外移动支付公司和硬件厂商、传统金融机构纷纷将目光瞄准中国
(2018年)下列地形地物要素中,可作为中小比例尺航测像片平面控制点的是(
影响产业购买者购买决定的主要因素不包括()。A.薪酬因素 B.环境因素 C
男性,30岁,因车祸致骨盆骨折,不能自行排尿,膀胱充盈,导尿管不能插入膀胱,多为
最新回复
(
0
)