Question

a large jar is full of marbles .if one marble is chosen at rabdom probality that it will be red is 7/11 what is the ration of red marbles to non red marbles in the jar ?​

Answer 1

7:4

given probability =7/11

so there are 7 red balls and total balls are 11

so non red balls are11-7=4

so the ratio=7:4