设集合A=｛a1,a2,a3,a4,a5,a6｝,若a2属于A∩B,a3不属于A∩B,则A的子集B的个数有____个.

设a1 a2 a3 a4 a5为自然数,A={a1 a2 a3 a4 a5},B={a1^ a2^ a3^ a4^a5^},且a1>a2>a3>a4>a5,并满足A交B={a1,a4},a1+a4=10,A并B 中各元素之和为256,求集合A 说明一下a1^之类的是a1的平方.应该是 a1 一道关于数学集合的难题!设a1,a2,a3,a4,a5 为自然数,A={a1,a2,a3,a4,a5},B={a1的平方,a2的平方,a3的平方,a4的平方,a5的平方},且a1 设a1,a2,a3,a4,a5,为正整数,A={a1,a2,a3,a4},B={a1²,a2²,a3²,a4²},其中a1,a2,a3,a4a4,a5属于正整数,且a1＜a2＜a3＜a4,同时A交B=｛a1,a4｝,a1+a4=10,当A并B元素之和为124,求集合A. 设a1,a2,a3,a4,a5,为正整数,A={a1,a2,a3,a4,a5},B={a1²,a2²,a3²,a4²,a5²},且a1＜a2＜a3＜+＜a5,并满足A∩B={a1,a4},且a1+a4=10.求a1和a4的值,若A∪B 中各元素之和为256,求集合A.a1＜a2＜a3＜a4＜a5 设集合A=﹛a1,a2,a3,a4,a5｝,B=｛a1²,a2²,a3²,a4²,a5²｝.设集合A=﹛a1,a2,a3,a4,a5｝,B=｛a1²,a2²,a3²,a4²,a5²｝,其中ai（1≤i≤5,i∈N）都是正整数,且a1＜a2＜a3＜a4＜a5,a1+a4=10, 已知A={a1,a2,a3,a4,a5},B={a1^2,a2^2,a3^2,a4^2,a5^2},ai属于N*,i=1,2,3,4,5,设a1＜a2＜a3＜a4＜a5,且A∩B={a1,a4},a1+a4=10,又AUB元素之和为224,求a1,a4,a5及集合A 设A=(a1,a2,a3,a4,a5),a1,a3,a5线性无关,a2=3a1-a3-a5,a4=2a1+a3+6a5,b=a1+a3,求方程组Ax=b的通解 设a1,a2,a3,a4,a5为自然数,A={a1,a2,a3,a4,a5},B={a1^2,a2^2,a3^2,a4^2,a5^2},且a1小于a2小于a3小于a4小于a5,并满足A与B的交集={a1,a4},a1+a4=10,A与B的并集中各元素之和为256,求集合A a1 a2 a3 a4 a5为正整数.A=｛a1 a2 a3 a4 a5 ｝a1 a2 a3 a4 a5为正整数.A=｛a1 a2 a3 a4 a5 ｝B=｛a1平方 a2平方 a3平方a4平方 a5平方｝且a1＜a2＜a3＜a4＜a5并满足AnB=｛a1 a4｝且a1+a4=10 AuB的元素和为256,求集合A 设a1,a2,a3,a4,a5为自然数,A=｛a1,a2,a3,a4,a5｝,B=｛a1²,a2²,a3²,a4²,a5²｝,且a1 数学爱好者请进设a1,a2,a3,a4,a5,为自然数,A= ｛a1,a2,a3,a4,a5,｝,B=｛a12,a22,a32,a42,a52｝,且a1< a2< a3< a4< a5｝,并满足A∩B=｛a1, a4｝, a1 +a4 =10,A∪B中各元素之和为256,求集合A?B=｛a1的平方，a2的平方，a3的 已知全集U={a1,a2,a3,a4,a5},B=已知A={a1,a2,a3,a4,a5},B={a1^2,a2^2,a3^2,a4^2.a5^2},其中a1,a2,a3.a4.a5属于Z,a1 等差数列中a1+a2+a3+a4+a5=3,a1*a1+a2*a2+a3*a3+a4*a4+a5*a5=12求a1-a2+a3-a4+a5 集合难题 已知集合A=【a1,a2,a3,a4,a5】集合B=【a1的平方,a2的平方,a3的平方,a4的平方,a5的平方】已知a1 设向量组a1,a2,a3,a4,a5线性相关,而向量组a2,a3,a4,a5线性无关,则向量组a1,a2,a3,a4,a5的极大无关组是A.a1,a2,a3 B.a2,a3,a4 C.a2,a3,a4,a5 D.a1,a2,a3,a4为什么选D呢 设｛an}是等比数列、且a1+a2+a3=18 a2+a3+a4=-9 则a3+a4+a5= 已知集合A={a1,a2,a3,a4,a5,a6,a7},A并上B={a1,a2,a3,a4,a5,a6,a7,.,a100},则所有满足题意的集合B的求急！ 已知集合A={a1,a2,a3,a4,a5,a6,a7},A∪B={a1,a2,a3,a4,a5,a6,a7.,a100},则所有满足题意的集合B的个数为?