Which of the following are independent events? select all that apply

1.you flip a coin and roll a number cube.
2.you draw a marble from a bag, replace it, and draw again.
3.you randomly choose 2 socks from a drawer, hoping they will match.
4.you draw two numbers from 1 to 10 from a hat without replacing the first.

Independent events are events which do not affect each other in any way. Therefore the independent events from this list are as follows: 
1, 2.
If you flip and coin, it isn't going to affect the outcome of the dice. Similarly, if you draw a marble form a bag and REPLACE it, you will still have the same number of marbles in the 2nd draw, meaning that the first draw wouldn't affect it. 

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