Dien dau lon be bang thich hop vao cho cham
1a68+4b2+53c ....abc+200
dien dau 1a68+4b2+53c...abc+2000
1a68+4b2+53c=1068+100.a+402+10.b+530+c=2000+abc
dien dau thich hop vao cho cham :
a7 + 8b .......... ab + 78
cho m x 3 +m+m =m x.....
so thich hop dien vao dau cham la...
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ban hay tim so thich hop dien vao dau cham hoi nhe!
1,4,9,?,25,36,49,64,81
vi 35--25=11;49-36=13;....cu the la nhung so le lien tiep nhauvay 4-1=3; 9-4=5suy ra 3;5;7vay 9+7=16
vay so tiep theo la 16.
DO 4-1=3
9-4=5
36-25=9
DÃY SỐ BÀY THEO QUY LUẬT 3,5,7,9,....
DẤU CHẤM HỎI LÀ SỐ:9+7=16
điền dấu ( < > =) : 1a68 +4b2 +53c .......abc +2000
bạn nào nhanh mình tick cho thank you các bạn
1a68 + 4b2 + 53c = (1+1)(a+4+5+1)(6+ b + 3 + 1)c = 2abc
abc + 2000 = 2abc
=> 1a68 + 4b2 + 53c = abc + 2000
Học tốt!!!
Viet tap hop E cac so tu nhien lon hon 3 va nho hon 13 bang 2 cach?
Sau do dien ki hieu thich hop vao cho cham :
3.......E ; 10.......E ; 4 va 7 ...........E
cách 1:E={4;5;6;7;8;9;10;11;12}
cách 2:E={x\(\in\) N/3<x<13}
3\(\notin\) E
10\(\in\) E
4 va 7 \(\subset\)E
Dien so thich hop vao cho cham de duoc cac phan so bang nhau:
1/3=....../15=9/.....=...../405
63/....=54/30=...../25
\(\frac{1}{3}=\frac{5}{15}=\frac{9}{27}=\frac{135}{405}\)
\(\frac{63}{35}=\frac{54}{30}=\frac{45}{25}\)
1/3 = 5/15 = 9/27 = 135/405
63/35 = 54/30 = 45/25
viet tap hop a cac so tu nhieu lon hon 8 va nho hon 14 bang 2 cach , sau do dien ki hieu thich hop vao o vuong
C1 :A = ( 9;10;11;12;13)
C2 : A = ( x\(\in\) N / 8<x<14 )