B = 1 199 + 2 198 + 3 197 + ... + 198 2 + 199 1 = 1 199 + 1 + 2 198 + 1 + ... + 198 2 + 1 + 1 = 200 199 + 200 198 + ... + 200 2 + 200 200 = 200 1 2 + 1 3 + ... + 1 200 = 200 A ⇒ B A = 200 A A = 200
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Các câu hỏi tương tự
Cho A=1/2+1/3+1/4+...+1/199+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A : B
tính a /b
A=1/2+1/3+1/4+..+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A/B biết:
A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
tính A/B biết:
A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A/B biết rằng:
A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A/B, biết rằng:
A=1/2+1/3+/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
tính A/B biết
A= 1/2+1/3+1/4+....+ 1/200
B= 1/199+2/198+3/197+....+198/2+199/1
phân số /
tinh A/B biet rang:
A=1/2+1/3+1/4+...+1/200
B =1/199+2/198+3/197+...+198/2+199/1
Tính A/B biết:
A = 1/2 + 1/3 + 1/4 + ... + 1/200
B = 1/199 + 2/198 + 3/197 + ... + 199/1
cho A /\(\frac{1}{199}+\frac{2}{198}+\frac{3}{197}+...+\frac{198}{2}+\frac{199}{1}\)
cho B:\(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{200}\)
Tính A:B