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Test # 109


1.
A and B together can perform a work in 10 days. A alone can perform the same work in 30 days. In how many days can B alone do this work ?

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Quantitative Aptitude
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down on (someone)
to be critical of someone, to be angry at someone
The girl is down on her friend but I do not know the reason.

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    The Mongols

    The Mongol Empire existed during the 13th and 14th centuries AD, and was the largest contiguous land empire in human history. The Mongol Empire emerged from the unification of Mongol and Turkic tribes of historical Mongolia under the leadership of Genghis Khan.The Mongols were considered barbarians and savages. They dominated Europe and Asia and were most famous for riding on horseback, lead by one of the greatest military commanders in history, Genghis Khan. They were highly disciplined and masters with using the bow and arrow on horseback. They used a composite bow that could rip through armor, and were also pretty good with lances and scimitars. They were masters of psychological warfare and intimidation, and built the second largest empire ever, smaller only than the British Empire. It all started when Genghis Khan vowed in his youth to bring the world to his feet. He almost did. Then he set his sights on China, and the rest is history.During an invasion of India, they built a pyramid in front of the walls of Delhi out of human heads. They, like the Celts, had a thing for severed heads. They liked to gather them up and catapult them inside the enemy s compound. They would also fling corpses infected with black death. When they ran across pregnant women, they did? things. Things we won t discuss here.


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