Question

A bag contains seven red marbles and three blue marbles. You randomly pick a marble and then return it to the bag before picking another marble. Both the first and second marble are red

Answer 1

There's a higher chance of getting a red one then there is a blue one.

Explanation:

Since there's 10 total marbles, 7 red and 3 blue. This information makes it so that there's a 70% chance of you getting a red one and 30% chance of you getting a blue one.