Question

• Formula of surface area of cuboid
  

Find the coordinate of the point of interception of the lines: x + 2y = 5 ; x + y = 3

What is the gradient the line that passes through points A(-3,-2) and B(1,0)?

Let the gradient of a line be 3, find the equation of the line at point(1,2)

Class 6 algebra

Question. The ground floor has 4 rooms more than the first floor . The second floor has 6 rooms less than the ground floor . If the first floor has 6 rooms , how many rooms do the ground floor and the second floor have

1. How many of numbers in contain a 3 and a 6?

2. How many of numbers in contain neither a 3 nor a 6