Tuyển Cộng tác viên Hoc24 nhiệm kì 26 tại đây: https://forms.gle/dK3zGK3LHFrgvTkJ6
tong sau day la so nguyen to hay hop so: 3.5.7 + (2n+1).(2n+3).(2n+5) voi n la so tu nhien
tap hop cac so nguyen n de A=44\2n-3 nhan gia tri nguyen la ?
tap hop cac so nguyen n de A=44/2n-3 nhan gia tri nguyen la
tap hop cac so tu nhien n de p=\(\frac{n+4}{2n-1}\) la so nguyen to
tim tap hop cac so nguyen n biet
a,3n chia het cho n-1
b,2n+7 la boi cua n-3
c,n+2 la uoc cua 5n-1
d, n-3 la boi cua n^2 +4
cho 2^n+1 la so nguyen to n>2. chung minh 2^n-1 la hop so
cho n>2 , 2 mu n -1 nguyen to
c/m 2 mu n +1 la hop so
tim so nguyen n sao cho 2n + 1/n - 5 la so nguyen
cho hai phan so C=2/n-1 va D=n+4/n+1 .tap hop cac so nguyen "n" de C va D deu la cac so nguyen la?
.mk dang can gap ai nhanh nhat mk tick cho
