= 97
**** cho mk nhé Lê Trường Giang
= 97
**** cho mk nhé Lê Trường Giang
-1-2-3-4-5-.......-100
-2-4-6-8-....-100
-6-9-12-15-......-99
-1+2-3+4-5+6-......-99+100
4-8+12-16+...........+196-200
Tính tổng S=6^2+6^4+6^6+...+6^98+6^100
-1-2-3-4-5-6........-100
1-2+3-4+5-6+......+99-100
B = 6+6^2+6^3 +...........+6^100 chia het cho 7
\(A =\)\(\dfrac{101+100+99+98+...+3+2+1}{101-100+99-98+...+3-2+1}\)
\(B=\) \(\dfrac{3737.43-4343.37}{2+4+6+...+100}\)
Làm cách lớp 6 thôi ah
M=1÷2×3÷4×5÷6×...×99÷100 & N=2÷3×4÷5×6÷7×...×100÷101
(1+1+2+2+3+3+4+4+5+5+6+6+7+7+8+8+...+100+100).(89.2)
2 .4 + 4 . 6 + 6 . 8 + ... + 98 . 100 + 100 . 101
Giải nhanh giúp mình nha...!!!!!!
bài 1
A=1*2*3+2*3*4+3*4*5+...+99*100*101
B=1*3*5+3*5*7+...+95*97*99
C=2*4+4*6+..+98*100
D=1*2+3*4+5*6+...+99*100
E=1^2+2^2+3^2+...+100^2
G=1*3+2*4+3*5+4*6+...+99*101+100*102
H=1*2^2+2*3^2+3*4^2+...+99*100^2
I=1*2*3+3*4*5+5*6*7+7*8*9+...+98*99*100
K=1^2+3^2+5^2+...+99^2