If the product of two numbers is 1800 and its H. C.F. Is 30, find the L. C.M.​

If 3x+8=3x+8 is it one solution or no solution

Can someone me out here number 4 plz

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.