A is twice efficient than B. A and B can both work together to complete a work in 7 days. Then find in how many days A alone can complete the work?
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If x + 8y = 20 and x = -3y, then y =
0.23 + 0.02323 + 0.002323.... == ???
Tarun invited 750 persons to a party. Every person that came to the party, came by a car such that exactly six persons came in each of the three different cars and exactly seven persons came in each of the remaining cars. At the party, when every person including Tarun was seated in a group of eleven, one group fell short by four persons. If maximum possible number of persons came to the party, then out of the persons who were invited by Tarun, how many persons did not come to the party?
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