Cau 1:tinh nhanh
a, 73.195-73.92+103.33
b,B=164.(57-136)-136.(-164-57)
c, 39.43+35.11+25.13
78.(-86)+50.(-26)-22.70
cau 2: 1, tim x :
a, (x+3)3 = (-4)3 :(-82) b, 7.l x-1l-2.l1-xl=20
2, cho M= 20 + 22 + 24 +26 + ....+ 22018. Tim du cua phep chia so M cho 7.
cau 3:
1, tinh so uoc tu nhien cua 5100
2, tim so tu nhien n de phan so 3n + 2 rut gon duoc.
7n +1
cau 4 : Cho doan thang MN va 101 diem phan biet nam giua 2 diem M va N. Tinh so doan thang duoc tao thanh.
cau 5 :
a, cho p,q la cac so nguyen to lon hon 3 thoa man p = q + 2. Tim so du khi chia (p+q) cho 12.
b, Co bao nhieu so tu nhien chan ma cac chu so deu khac nhau ?
( cac ban tra loi nhanh va dung nhat mik se bam cho 2 like )
giup mik nha ^-^
