P=1/2+1/4+...+1/256
2P=2.(1/2+1/4+...+1/256)
2P-P=(1+1/2+...+1/128)-(1/2+1/4+...+1/256)
P= 1- 1/256
P= 255/256
chắc chắn đúng.
nhớ **** cho mình nha
cac ban giai giup minh bai nay voi , nhanh nha minh dang can gap
1/2+ 1/4 +1/8 + 1/16 + 1/32 + 1/64
tinh bang cach thuan tien nhat mha
tinh bang cach thuan tien nhat
1/2+1/6+1/12+1/20
1/2+1/6+1/12+1/20+..........+1/9900
1/2+1/3+1/4+1/8+1/16
1/2+1/3+1/4+1/8+1/16+........+1/512
tinh tong banh cach nhanh nhat
A= 1/2 +1/4+1/8+1/16+1/32+1/64+1/128+1/256
GIAI CHI TIET GIUM NHE
tinh bang cach thuan tien nhat : 1+2-3-4+5+6-7-8+9+...+2013+2014-2015-2016
cho day so sau:
1,20+ 3,26+7,20+5,26+9,20+13,26+6,20+28,26
cac ban tinh giup minh bang cach thuan tien nhat nha, biet rang tong cac chu so deu bang nhau.
Tinh bang cach thuan tien nhat :
a) 1/3 + 1/4 + 2/3 + 3/4
b) 1/2 + 1/3 - 1/5 + 1/6
1. tinh bang cach thuan tien nhat 73,5 -31,6 ,4
tinh bang cach thuan tien nhat :
1 gio 15 phut + 75 phut + 1,25 gio x 8
Tinh bang cach thuan tien nhat
1/2+2+1/2×4+1/2×4
3/9+4/3+1/3×5
0.6+0.9+0.3×5
