from 5 boys and 4 girls a committee of 5 is said to be formed . In how many ways can this committee be done as so as to includes at least one girl ?

Match the following items. 1 1 (4,4) 2. (-4,-2) 3. (3.-6) 4. (-4, 6) 5. (1,5)

Explain why the rate of urbanisation is in the way it is between developed and undeveloped countries.

Read the article about the fraser river, one of the most important rivers in canada. what is the most important species of fish in this river? why are the numbers of these fish declining?