MBA Exam

Find the unit digit:1^2! + 2^3! + 3^4! + 4^5! +.........+150^151! +...153^154!

1) 1
2) 0
3) 5
4) 7

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MBA Other Question

Two friends Aku and Chika are stationed at two different points P and Q respectively along the same bank of a straight stretch of a flowing river. The ratio of the speeds of Aku and Chika in still water is 1 : 3. When Aku and Chika swim in the opposite directions from P and Q respectively, they meet at a point 30 meters from Q. If the time taken by Aku to reach point Q and Chika to reach point P from their original positions P and Q is the same, then the distance (in meters) between P and Q is

1) 45
2) 90
3) 120
4) 60
There are 8 bags of rice looking alike,seven of which have equal weight and one is slightly heavier.The weighing balance is of unlimited capacity.Using this balance,the minimum number of weighing required to identify the heavier bag is(please share ur approach if u get the ans)

1) 2
2) 3
3) 4
4) 8