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Attractions in Vietnam are plentiful, ranging from stunning natural landscapes, untouched islets and quaint villages to war museums, colonial structures, and ancient citadels. The Cu Chi tunnels, located outside Ho Chi Minh City, represent the sheer grit and ‘can-do’ attitude of the Vietnamese while a visit to the War Remnants Museum brings home the horrible reality of war. On the more positive side, the marvellous Hue Monuments, along with the My Son Sanctuary will awaken your spiritual side.
Attracting millions of visitors all year long, its colonial heritage also means that many hotels feature a unique blend of French and Asian influences while its cuisine is highly regarded as one of the best in the world. With so many things to see and do in Vietnam, planning your travel itinerary as a first-time visitor can be a challenge, so we’ve compiled a general list of Vietnam’s must-see attractions.

S = 1/4 + 1/42 + 1/43 + ... + 1/450
4S = 4(1/4 + 1/42 + 1/43 + ... + 1/450)
4S = 1 + 1/4 + 1/42 + ... + 1/449
4S - S = (1 + 1/4 + 1/42 + ... + 149) - (1/4 + 1/42 + 1/43 + ... + 1/450)
3S = 1 - 1/450
S = \(\frac{1-\frac{1}{4^{50}}}{3}\)

\(\frac{x}{4}+\frac{9}{8}=\frac{7}{12}\)
\(\frac{x}{4}=\frac{7}{12}-\frac{9}{8}\)
\(\frac{x}{4}=\frac{-13}{24}\)
\(\Leftrightarrow24.x=\left(-13\right).4\)
\(\Leftrightarrow24.x=-52\)
\(\Leftrightarrow x=\left(-52\right):24\)
\(\Leftrightarrow x=\frac{-13}{6}\)
\(\frac{x}{4}+\frac{9}{8}=\frac{7}{12}\)=> \(\frac{x}{4}=\frac{7}{12}-\frac{9}{8}\)
=> \(\frac{x}{4}=\frac{14}{24}-\frac{27}{24}\)=\(\frac{-13}{24}\)=> \(24x=-52\)=> x=\(\frac{-52}{24}=\frac{-13}{6}\)
vậy x=\(\frac{-13}{6}\)


1 + 12345678910 = 12345678911.
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