tính tong cua tat ca cac so nguyen co gia tri tuyet doi nho hon 10
Tinh tong tat ca cac so nguyen co gia tri tuyet doi nho hon 10
1.viet
a;Tap hop A tat ca cac uoc so cua so a biet a=2^3x 3
b;Tap hop C cac so tu nhien nho hon 20 la boi cua 4
tong tat ca cac so nguyen co gia tri tuyet doi nho hon hoac bang 7
cho B=n/n-3(n thuoc Z , n khac 3)
tim tat ca cac gia tri nguyen cua n de B la so nguyen
CHo C= 3n+5.n+7(n thuoc Z, N khac -7)
tim tat ca cac gia tri nguyen cua n de C la so nguyen
cho A la tap hop cac so tu nhien chan nho hon 100, B la tap hop cac so tu nhien chia het cho 3 va nho hon 300.Tap hop A va tap hop B co tat ca so phan tu chung la
Tim tat ca cac phan so co mau la 20, lon hon 3/13 va nho hon 5/13
tim tat ca cac gia tri nguyen cua n de A la so nguyen
tim tat ca cac phan so co mau so la 12 lon hon -2/3 va nho hon -1/4.
