tim so nguyen N biet n-4 la 12
Tim cac so nguyen x, biet:
1. -10<x<-5
2. -4<hoac= x <hoac=3
3. n+9<x<hoac=n+12
4. n+15<x<n+15
5. x<-9 va x<9
6. |x|=|10|
7. |x|=20 va x>0
8. |x|=-100
9. |-5|+|-9|+x=14+|12|
10. 8+x=|-8|+20
tim so nguyen n, biet:
x(x-3)<0
tim n thuoc Z de
a)n+3/n-2 la so nguyen am
b)n+7/3n-1 la so tu nhien
c)3n+2/4n-5 la so tu nhien
d)15/n ; 12/n+2 va 6/2n-5 deu la so nguyen
ai giai duoc,trinh bay day du mik tick cho(mik can gap)
tim so nguyen x
biet rang x+5 la so nguyen am nho nhat co 2 chu so
bai 2 tim so nguyen x biet rang x-7 la so nguyen am lon nhat co 2 chu so
nhanh len minh dang gap minh like nhanh len
tim so tu nhien n sao cho:n+1; n+3; n+7; n+9; n+11; n+13; n+15 la cac so nguyen to
tim so nguyen x biet
a) 14 - 3x = -x + 4
b) x - 12 = (-9)- (-15)
c) 16 - \(|\)5 - 2x \(|\)= 9
Biet rang n+1; n+3; n+7; n+9; n+13; n+15; n+19 deu la cac so nguyen to. Vay n = ?
tim tat ca cac so tu nhien n de cac so sau la so nguyen to :n+1,n+3,n+7,n+9,n+13,n+15
