( 100 - 1 ) ( 100 - 2 ) ( 100 - 3 )
= 99 . 98 . 97
= 941094
so (100-3) mik ghi sai sửa thành số (100-n)
1:" thuc hien phep tinh : (-1)+2-3+4-....-99+100
thuc hien phep tinh
a) S1=2+2^2+2^3+...+2^90
b)S2= (-2) +(-2)^2 +(-2)^3+...(-2)^100
c)S3=2^100-2^99-2^98-2^97-...-2^2-2-1
d)S4=1-3+5-7+...+2001-2003+2005-
thuc hien phep cac phep tinh sau:
a, (1-1/2).(1-1/3).(1-1/4)...(1-1/100)
b, (1+1/1.3).(1+1/2.4).(1+1/3.5)...(1+1/99.101)
ko thuc hien phep tinh tong nao sao day chia het cho 8
a 100-40
b 80-16
so sanh A va B
A=10^30
B=2^100
ai nhanh minh tich cho
khong thuc hien phep tinh nha
Thuc hien phep tinh
e)\(\left(\frac{2}{3}-\frac{-2}{7}-\frac{1}{14}\right):\left(-1-\frac{3}{7}+\frac{3}{28}\right)\)
f) \(\left(\frac{1}{2}-1\right)\left(\frac{1}{3}-1\right)\cdot\left(\frac{1}{4}-1\right)...\left(\frac{1}{100}-1\right)\)
Thuc hien phep tinh hop lý
( 1+2+3+...+1000).(108.111- 36.333)
thuc hien phep tinh
m=1+(-2)+3+(-4)+...+(-2016)+2017
1/4 - 1/3+ 5/12 Thuc hien cac phep tinh (tinh hop li neu co the)
