Các câu hỏi tương tự
Tim cac so nguyen a, b sao cho: a + b = a.b
Tim cac so nguyen a , b sao cho : a + b = a.b
a,Tim cac so nguyen a,b sao cho a.b=-3
b,tinh tong cac so nguyen x biet: -6<x+2<8
c,tim tat ca cac U(-15)
a, Cho ( a,b) = 1 . Chung minh rang (a.b, a+b)=1
b, Cho (a,b)= 1. Tim UCLN (11a+2b , 18a +5b)
C,, Cho A = m+n ; B=m^2+n^2.Trong do m va n la cac so tu nhien nguyen to cung nhau. Tim UCLN (A,B)
d, Tim cac so tu nhien n sao cho n^3 - n^2 + n-1la so nguyen to
Tim cac so nguyen a,b,c khac 0 , biet : a.b=c.b.c=4.a va a.c = 9b
cho A= { 8; 45}
B={ 15; 4}
a) tim tap hop C cac so tu nhien x= a+b sao cho a thuoc A va b thuoc B
b) tim tap hpo D cac so tu nhien x = a-b sao cho a thuoc A va b thuoc B
c) tim tap hop E cac so tu nhien x = a.b sao cho a thuoc A va b thuoc B
d) tim tap hop G cac so tu nhien x sao cho a=b.x va a thuoc A; b thuoc B
làm đầy đủ nha
tim tat ca cac bo 3 so nguyen to lon hon 3 sao cho :a.b.c<a.b+b.c+c.a
tim cac so nguyen to P sao cho
a. P+10;P+20 la cac so nguyen to
b. P+2;P+6;P+8;P+14 la cac so nguyen to
tim so co 2 chu so ab sao cho a.b/a-b la so nguyen to