Find the sum of nth term 2+4+7+11+16
Question
by solving with substitution method 
I want to know what is completing the square method and how to solve it. Where we will use identities and all the basic knowledge about completing the square method.
how many 5 digits number can be formed without repitation if 2 ,3 and 5 always occur in each number
how many 5 digits number can be formed without repitation if 2 ,3 and 5 always occur in each number
Maths
Sept. 3, 2018, 7:55 a.m.
Answer
Prove that any straight line drawn from the vertex of a triangle to the base is bisected by the straight line which joins the middle points of the other sides of the triangle
8number