The mean and the variance of a binomial distribution are 4 and 2 respectively. Then the probability of 2 successes is?
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In a pond ecosystem, large fishes and small fishes will be there. If we want to remove small amount of pollutants, small fishes are to be employed. In a food chain food passes through a number of mouths and en route the mouth of the super feeder-the eagle. Its population determines the size of the ecosystem. But this has been proved false.What can you infer from above? (4 choices)
A finishes the work in 10 days & B in 8 days individually. If A works for only 6 days then how many days should B work to complete A's work?
15 lit of water containing 20 % of alcohol ,then added 5 lit of water .What is the % of alcohol?
from 1994 to 1995 the sales of a book decreased by 80% if the sales in 1996 were the same as in 1994 by what percent they inrease from 1995 to 1996
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cost of an item is Rs 12.60 7 profit is 10% over selling price what is the selling price
A traveler walks a certain distance. Had he gone half a kilometer an hour faster , he would have walked it in 4/5 of the time, and had he gone half a Kilometer an hour slower, he would have walked 2 ½ hr longer. What is the distance?
a cube has colors blue,red ,yellow each on two opposite sides.cube is divided into "32 small cubes and 4 large cubes". how many cubes (on 36 cubes) have blue at least one side. how many cubes have colors on two sides.
A is driving on a highway when the police fines him for over speeding and exceeding the limit by 10 km/hr.same time B is fined for over speeding by twice the amount by which A exceeded the limit.If he was driving at km/hr what is the speed limit for the road?
A train 100 meter long takes 3 second to cross a man walking at the rate of 6km/hr in a direction opposite to that of the train. Find the speed of the train.
There are 40 seats in a bus. People agree to share the money for the number of seats. The total money comes to 70.37. How many seats were free?
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