Suppose on an average 1 house in 1000 in a certain district has a fire during a year . If there are 2000 houses in the district , then the probability that exactly 5 houses will have a fire during the year is

A certain radioactive substance has a half life of 5 years. Thus for a nucleus in a sample of the element, probability of decay in 10 years is

frac(1)(5) th part of a house has been painted. What percent of the house is still to be painted, lets find out.

The radius of the circular path of a geostationary satellite was inadvertently made deltar=1km larger than the correct radius r = 42000 km Calculate the difference in angular peed of the satellite and the earth. If the satellite was exactly above a house on the equator on a particular day, what will be angular separation between the house and the satellite a year later?