exam Maths Puzzle Numerical Ability

Use mathematical induction to prove the statement is true fro all positive integers, n:
6+12+18+....6n=3n(n+1)

Do I just divide this out? I.e. 12/6=2....?

Read Solution (Total 0)

exam Other Question

let f(x)=x^3-1 and g(x)=x^2+x+1. find (f/g)(x) Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of chocolate bar and the cost of a pack of gum.