MBA Exam Numerical Ability Algebra

A cylindrical tube is 3 m long. Its inner diameter is 3.5 cm and outer
diameter 4.0 cm. Find its weight in kg, if the metal weights 8 tonnes per cubic
metre.?

1) 7
2) 8
3) 9
4) 10

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MBA Other Question
eleven books, consisting of 5 engineering books, 4 mathematics & 2 physics books are arranged in a shelf at random. probability that the books of each kind are all together ?explain plz

1) 5/1155
2) 2/1155
3) 3/1155
4) 1/1155
 Tarun invited 750 people to a party. Everyone who came to the party, came by a car. Three cars carried 6 people each and rest of the cars carried 7 people each. Only those people came to the party who were invited by Tarun. At the party, when every person including Tarun was seated in groups of eleven, one group fell short by four people. If maximum possible number of people came to the party, then out of the people who were invited by Tarun, how many people did not come to the party?a. 19 b. 38 c. 39 d. 18

1) a
2) b
3) c
4) d