Chứng minh rằng:
\(\dfrac{1}{1.3}+\dfrac{1}{2.4}+\dfrac{1}{3.5}+\dfrac{1}{4.6}+...+\dfrac{1}{97.99}+\dfrac{1}{98.100}\)<\(\dfrac{3}{4}\)
Giúp mình nhé
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Toán lớp 6
Chứng minh rằng:
\(\dfrac{1}{1.3}+\dfrac{1}{2.4}+\dfrac{1}{3.5}+\dfrac{1}{4.6}+...+\dfrac{1}{97.99}+\dfrac{1}{98.100}\)<\(\dfrac{3}{4}\)
Giúp mình nhé
