MBA Exam

In the famous game "Playwin", Raj wants to try his luck. The rules of the game requires Raj to select seven digits from 0 - 9 (both 0 and 9 inclusive). While selecting seven digits he wants to fulfil following 2 conditions. i) Digit 1 will appear exactly once in the selection. ii) The other six digits will be three non-zero digits, each appearing exactly twice. In how many ways can Raj select the seven digits?

1) 56
2) 84
3) 90
4) 51
5) None of these

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MBA Other Question
in 2001,the transportation costs of an item is 35% of its manufacturing cost.from 2001 to 2002,the manufacturing cost of the item has gone up by 25%.the transportation cost in 2002 is 50% of the manufacturing cost in 2002.by what percentage should the total cost in 2002 be reduced so as to bring it back to 2001 level?(manufacturing cost+transportation cost=total cost)?pl. provide sol. also.

1) 21%
2) 38.88%
3) 33.33%
4) 28%
 774958A96B IS DIVISIBLE BY BOTH 8 AND 9....WHAT ARE THE RESPECTIVE VALUES OF A AND B.

1) 7,8
2) 8,0
3) 5,8
4) NONE OF THESE