book Maths Puzzle Numerical Ability

5x-3y=70
-5x-4y=0

Read Solution (Total 0)

book Other Question

Can someone please help find the LCM
(x-1)^3(x+1); (x-1)(x+1);(x-1)^2(x+1)^2

Thanks for your help. Hi, If I had a bag of marbles containing 5 green, 3 Blue and two red marbles. What is the probability of drawing the following marbles at random:

A red?
A red and then a green