99999999 + 999999999=?
9+99+999+9999+99999+999999+9999999+99999999+999999999+9999999999 = ?
9 . 1 + 9. 11 + 9.111 + 9.1111 + 9.11111 + 9.111111 + 9.1111111 + 9.11111111 + 9.111111111 + 9.1111111111
9+99+999+9999+99999+999999+9999999+99999999+999999999+9999999999
tính nhanh
= (10-1) + (100 -1) + (1000-1) + (10000-1) + ............+ (10000000000-1)
= ( 10+100+1000+10000+..........+10000000000) - (1+1+1+1+..........+1+1)
=11111111110 - 1.10
=1111111100
= (10-1) + (100 -1) + (1000-1) + (10000-1) + ............+ (10000000000-1)
= ( 10+100+1000+10000+..........+10000000000) - (1+1+1+1+..........+1+1)
=11111111110 - 1.10
=1111111100
999999999 . 999999999 . 999999999 = ?
ai trả lời nhanh nhất sẽ được tick
999999999.999999999.999999999=9999999993
OK TK MK NHA
bn ơi số dài quá mik tính tay ko có máy tính nên ko thể tính đc
Cho biểu thức:A=999999999/2-999999999/3-999999999/6.So sánh A với 0
Cho biểu thức A=999999999/2-999999999/3-999999999/6. So sánh A với 0
\(A=\frac{999999999}{2}-\frac{999999999}{3}-\frac{999999999}{6}\)
\(=\frac{999999999\cdot3-999999999\cdot2-999999999}{6}\)
\(=\frac{999999999\cdot3-999999999\cdot\left(2+1\right)}{6}\)
\(=\frac{999999999\cdot3-999999999\cdot3}{6}=\frac{0}{6}=0\)
vậy A=0
tôi thề là A = 0
tôi vừa tính xong
đúng hơn là tính máy tính
A=999999999.(\(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\))=999999999.0=0=A
99999999+99999999=
999*999*9999*999999999*999*999999999=?
999*999*9.999*999.999.999*999*999.999.999=9.969.032.967.062.934.035.697.032.987.001
tớ ghi vậy cho dễ nhìn