S={14;15;16;17;18;19;20;21}
S={x\(\in N\)/13<x\(\le\)21}
CÁCH 1:
A={14;15;16;17;18;19;20;21}
CÁCH 2:
A={ x\(\in\)N / 13 < x\(\le\)21 }
Bai 1 : Viet tap hop A cac so tu nhien lon hon 4 va ko vuot qua 7 bang hai cach .
a ) Viet tap hop cac so tu nhien khac 0 va ko vuot qua 12 bang hai cach .
b ) Viet tap hop M cac so tu nhien lon hon hoac bang 11 va ko vuot qua 20 bang hai cach .
c ) Viet tap hop M cac so tu nhien lon hon 9 ,nho hon hoac bang 15 bang 2 cach .
d ) Viet tap hop A cac so tu nhien ko vuot qua 30 bang 2 cach .
e ) Viet tap hop B cac so tu nhien lon hon 5 bang 2 cach .
f ) Viet tap hop C cac so tu nhien lon hon hoac bang 18 va ko vuot qua 100 bang 2 cach .
Ai lam nhanh minh se tick cho nha ,minh can gap .
Viet tap hop A cac so tu nhien lon hon 4 va khong vuot qua bang hai cach
a' viet tap hop e cac so tu nhien ko nho hon79 nhung ko lon hon85 bang 2 cach
b'viet tap hop m cac so tu nhien lon hon 50 nho hon78 va chia het cho 4 bang 2 cach
Viet tap hop A cac so chan tu nhien lien tiep lon hon 48 va khong vuot qua 178 bang cach chi ra tinh chat dac trung cho cac phan tu cua tap hop.Tinh so phan tu cua A.
nhanh gium nha minh can gap cam on nhieu
viet cac tap hop sau va cho biet moi tap hop co bao nhieu phan tu ?
a) tap hop cac so tu nhien khong vuot qua 50
b) tap hop cac so tu nhien lon hon 8 nho hon 9
e, E tap hop va so tu nhien le khong vuot qua 30
f, F tap hop cac so tu nhien chan khong vuot qua 30
g, G tap hop cac so tu nhien lon hon 30
h, H tap hop cac so tu nhien lon hon 30 nho hon 31
k, K tap hop cac so tu nhien chia cho 3 du 1 lon hon 20 nhung nho hon 100
viet tap hop B cac so tu nhien chan lon hon 2 va nho hon 10 bang hai cach.
tap hop C gom cac so tu nhien chia het cho 3 va nho hon 20, lon hon 10 (viet bang 2 cach)
Viet tap hop A cac so tu nhien lon hon 6 va nho hon hoac bang 10 bang hai cach
