Name the group number of halogne family?

Which of the following cover the greater number of organisms: Family or Phylum

Which of the following cover the greater number of organisms: Family or Order

Give the group number of nitrogen and phosphorus.

An experiment consists of recording boy-girl composition of families with 2 children. What is the sample space if we are interested in the number of girls in the family?

The number of children in 10 families of a locality are: 2,4,3,4,2,0,3,5,1,6 .Find the mean number of children per family.

An experiment consists of recording boy-girl composition of families with 2 children. What is the sample space if we are interested in the number of girls in a family ?

Name the group to which halogens belongs?

Name the group of algae that inhabit deep sea.

An Organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehiclesin a family. The information gathered is listed in the table below : Suppose a family is chosen. Find the probability that the family chosen is : earning $ 10000-13000 per month and owning exactly 2 vehicles.