1. Which of the following statements is false
a/ Every fraction is a rational number
b/ Every rational number is a fraction
c/ Every integer is a rational number
2. The angled in a right angled isosceles triangle  are÷
a/60°,60°,60° b/ 90°,60°,30° c/90°,45°,45° d/ none of these
3. Write in the expended form÷
a/ (2x-3b-1)square 
4/ find the volume of a sphere whose radius is 7 cm?
5/ Find the decimal expansion of 2/3