tim so nguyen c thoa man c+1 la uoc so cua 6c-1
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voi n so tu nhien thoa man 6n+1 va 7n-1 la hai so tu nhien khong nguyen to cung nhau thi uoc chung lon nhat cua 6n+1 va 7n_1 la bao nhieu
voi n so tu nhien thoa man 6n+1 va 7n-1 la hai so tu nhien khong nguyen to cung nhau thi uoc chung lon nhat cua 6n+1 va 7n-1 la bao nhieu
tim số nguyen duong nho nhat thoa man mot phan 2 so do la so chinh phuong,mot phan 3 so do la luy thua bac 3 cua 1 so nguyen, mot phan 5 so do la luy thua bac 5 cua 1 so nguyen
tim tat ca cac so nguyen a biet
a) a+2la uoc cua 7
b)2a la uoc cua 7
c) 12 la boi cua ( 2a + 1)
d) 6a +1 la boi cua (2a +1)
tim x dua vao quan he uoc boi:tim so tu nhien x sao cho x-1 la uoc cua 12tim so tu nhien x sao cho 2x+1 la uoc cua 28tim so tu nhien x sao cho x+15 la boi cua x+3tim cac so nguyen x,y sao cho (x+1)(y-2)3tim so nguyen x sao cho(x+2).(y-1)2tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180tim so nguyen to x,y biet x+y12 va UCLL (x:y)5tim so tu nhien x,y biet x+y32 va UCLL (x:y)8tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100x150tim so x nho nhat khac 0b biet...
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tim x dua vao quan he uoc boi:
tim so tu nhien x sao cho x-1 la uoc cua 12
tim so tu nhien x sao cho 2x+1 la uoc cua 28
tim so tu nhien x sao cho x+15 la boi cua x+3
tim cac so nguyen x,y sao cho (x+1)(y-2)=3
tim so nguyen x sao cho(x+2).(y-1)=2
tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180
tim so nguyen to x,y biet x+y=12 va UCLL (x:y)=5
tim so tu nhien x,y biet x+y=32 va UCLL (x:y)=8
tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100<x<150
tim so x nho nhat khac 0b biet x chia het cho 24 va 30
40 chia het cho x . 56 chia het cho x va x>6
cho x la so nguyen thoa man : -7/25<x/30<-1/5. so gia tri cua x thoa man la
-7/25<x/30<-1/5
quy đồng mẫu
=>(-42/150)<(5x/150)<(-30/150)
vậy số giá trị là 11
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moi nguoi giup toi voi........cho ket qua thoi nha1. gia tri x+y+z biet :lx-5l+ly-4l+lz-4l02.so cac uoc nguyen duong cu 2^6.3^33.so cac uoc nguyen duong cua 184.so duong thang tao thanh boi 8 biem phan biet doi mot khong thang hang5.so tu nhien n thoa man 2^n+1:4^210246.UCLL(12,18,24)7.so tu nhien n thoa man 2+4+6.......+n1108.tim x 576.15:x5409.gia tri a+b+c bieta+b10,a+c25,b+c25so phan tu cua tap hop A cac so le nho hon 23
Đọc tiếp
moi nguoi giup toi voi........cho ket qua thoi nha
1. gia tri x+y+z biet :
lx-5l+ly-4l+lz-4l=0
2.so cac uoc nguyen duong cu 2^6.3^3
3.so cac uoc nguyen duong cua 18
4.so duong thang tao thanh boi 8 biem phan biet doi mot khong thang hang
5.so tu nhien n thoa man 2^n+1:4^2=1024
6.UCLL(12,18,24)
7.so tu nhien n thoa man 2+4+6.......+n=110
8.tim x 576.15:x=540
9.gia tri a+b+c biet
a+b=10,a+c=25,b+c=25
so phan tu cua tap hop A cac so le nho hon 23
1.Tim cac so nguyen x,sao cho:
A.11 la boi cua 2.x-1
B.x-13 la boi cua 2x-1
C.2x-1la uoc cua 21
D. X+1 ls uoc cua 4x+11
tim so nguyen p sao cho p^2=1 va p^4+1 cung la so nguyen to. tra loi so nguyen to thoa man la p=