A box contains 6 red pens and 4 blue pens. Cory randomly picks a pen from the box and keeps it. Then Tommy randomly picks a pen from the box. What is the probability both boys will pick red pens?
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3/10 because for RED pens it will be 6/10 multiplied by 5/9 which is 1/3 (last one was for blue i said)
Answer:
1/3
Step-by-step explanation:
6 red pens and 4 blue pens, so total is 10 pens
First, Cory randomly picks a red pen from the box and keeps it = 6/10 = 3/5
Then Tommy randomly picks another red pen from the box = 5/9
The probability both boys will pick red pens = 3/5 x 5/9 = 3/9 = 1/3