2-4-6+8+10-12-14-16+...+194-196-198+200+202
TÍNH 2-4-6+8+10-12-14+16+...+194-196-198+200+1000
Tính tổng S= 200 - 198 + 196 - 194 + ...... ...... + 8 - 6 + 4 - 2
ai nhanh mik tick !!!!
tìm x biết x+1/200+x+3/198=x+5/196+x+7/194
haỹ tính những giá trị sau
A=3^2+3^3+3^4+...+3^100
B=4^200-4^198+4^196-...-4^4+4^2-4
C=5^50-5^48+5^46-...-5^4+5^2-5
D=3^99-3^96+3^93-...+3^3-3^1
E=5^99-5^96+5^93-...+3^3-3^1
F=3^50-3^48+3^46-...-3^4+3^2-3
36 + 38 + 40 + 42 + 44 + 46 + 48 + 50
A) 12000-(1500×2+1500×3+1500×2:3)
B) 2×{198-[158-(46+4)×2]}
C) 200:{196-[187+(15+5):4]:2}
D) 12: {390:[500-(125+35×7)]}
cho A = 1+4+42+43+44+45+46+47+48 . Chứng minh A chia hết cho 3
Tính S = 1+2-3-4+5+6-7-8+.......+193+194-195-196+197+198