1.集合P={x=|x=2k,k€Z},Q={x|x=2k+1,k€Z},R={x|x=4k+1,k€Z},a€P,b€Q,则有( )A.a+b€PB.a+b€QC.a+b€RD.a+b不属于P,Q,R中的任何一个.P={x|x=2k,k€Z} .a€P .a+b=

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1.集合P={x=|x=2k,k€Z},Q={x|x=2k+1,k€Z},R={x|x=4k+1,k€Z},a€P,b€Q,则有( )A.a+b€PB.a+b€QC.a+b€RD.a+b不属于P,Q,R中的任何一个.P={x|x=2k,k€Z} .a€P .a+b=

1.集合P={x=|x=2k,k€Z},Q={x|x=2k+1,k€Z},R={x|x=4k+1,k€Z},a€P,b€Q,则有( )A.a+b€PB.a+b€QC.a+b€RD.a+b不属于P,Q,R中的任何一个.P={x|x=2k,k€Z} .a€P .a+b=
1.集合P={x=|x=2k,k€Z},Q={x|x=2k+1,k€Z},R={x|x=4k+1,k€Z},a€P,b€Q,则有( )
A.a+b€P
B.a+b€Q
C.a+b€R
D.a+b不属于P,Q,R中的任何一个.
P={x|x=2k,k€Z} .
a€P .
a+b=

1.集合P={x=|x=2k,k€Z},Q={x|x=2k+1,k€Z},R={x|x=4k+1,k€Z},a€P,b€Q,则有( )A.a+b€PB.a+b€QC.a+b€RD.a+b不属于P,Q,R中的任何一个.P={x|x=2k,k€Z} .a€P .a+b=
选（ B ）
P是偶数集
Q是奇数集
a∈P,b∈Q
a是偶数,b是奇数
则a+b是奇数
即a+b∈Q
不能选C
因为R只是奇数集的子集
比如a=2,b=1
a+b=3
3不属于R

B

D

Sina Technology News July 1 pm news, for a few days ago to test water Taobao online games operator messages related to Alibaba Group, said in an interview, Alibaba will never set foot gaming area, Tao...

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Sina Technology News July 1 pm news, for a few days ago to test water Taobao online games operator messages related to Alibaba Group, said in an interview, Alibaba will never set foot gaming area, Taobao's not involved in gaming operations.
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today Alibaba Group stakeholders in connection with nike air max SAN, reiterated nike air max position will not enter nike air max gaming area, air max trainers said that Taobao will not be involved in gaming operations.
nike air maxse people also said that some game companies nike airmax trainers Taobao in contact with nike air max process, have been doing online game show co-operation idea, air 95 trainers for Taobao's consistent position in nike air max game, were Taobao area declined. Mentioned in yesterday's report on Taobao Jiangsu Branch,Nike Air Max 90 Flywire, nike air max sources said Beijing now has branches in addition to Taobao, in onike air maxr regions were not set up any branch.
Taobao will attend this year's ChinaJoy is concerned, Alibaba also gives nike air max trainers response that Taobao has not set up in nike air max trainers ChinaJoy booth, just outside for ChinaJoy carry out some promotional marketing, including promotion of Amoy girl Amoy lakes,Nike Air Max 90 Flywire, etc.. \
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P={ x| x=2k+1,k ∈Z } 为什么和 Q={ x| x=2k-1,k∈Z 是同一个集合? 1.集合P={x=|x=2k,k€Z},Q={x|x=2k+1,k€Z},R={x|x=4k+1,k€Z},a€P,b€Q,则有( )A.a+b€PB.a+b€QC.a+b€RD.a+b不属于P,Q,R中的任何一个.P={x|x=2k,k€Z} .a€P .a+b= 集合M={x丨x=3k-2,k∈Z},集合P={x丨x=3l+1,l∈Z} 设全集U=Z,M={x|x=2k,k∈Z},N={x|x=3k,k∈Z},求集合M∩(CuP).打错了，第二个集合是P不是N 集合P={x|x=2k,k∈Z},M=[x|x=2k+1,k∈Z},a属于P,b属于M,设 c=a+b,则c与集合什么关系 高一集合题,不大懂M={x｜x=2k,k∈Z},P={x｜x=4k+2,k∈Z},为什么M与P不是同一集合? 集合A={x|x=2k,k∈Z}与集合B={x|x=4k, 集合P={x丨x=sin(kπ/2,k∈Z}的子集的个数 集合A={X|X=2K,K∈Z}与集合B={X|X=4K+3,K∈Z} 之间的关系 ...- 已知集合M={x│x=kπ/2±π/4,k∈z},p={x│x=kπ/4±π/2,k∈z},则M,P之间的关系 集合,符合k表示什么?E={x∈Z丨x=2k+1,k∈Z} 设集合M={x=k/2+1/4,k属于Z},N={x│x=k/4+1/2,k属于Z},P={x|k/8+1/4,k属于Z},则M∪N=P和M∩P=M?设集合M={x=k/2+1/4,k属于Z},N={x│x=k/4+1/2,k属于Z},P={x|k/8+1/4,k属于Z},则M∪N=P和M∩P=M都对吗? 1.设6∈｛x|x^2-ax+b=0｝,用列举法表示集合｛x|x^28x+a=0｝2.为什么 P=｛x|x=3k+2,k∈Z｝,Q=｛x|x=3k-1,k∈Z｝是同一集合? 用自然语言表述集合M={x|x=k/2+1/4,k∈z} 集合M={x|x=5k+2,k∈Z,20 集合M={X|X=5K+2,K∈Z,20 已知集合M={x/x=5k+2,k属于Z且20 设集合A=｛x|x=3k+1,k属于Z｝,B={x|x=2k,k属于Z},则A交B=?