The work is on the picture attached, but a = 1
Hope this helps!!
Answer: 0.1
Step-by-step explanation:
Given
Bag-I has 2 blue,3 orange, 5 red
Bag-II has 4 Pink,10 blue, 6 brown
No of ways of choosing a blue marble from bag-I

Total no of ways of choosing a marble from bag-I

No of ways of choosing a blue marble from bag-II

Total no of ways of choosing a marble from bag-II

The probability that he will pull out a blue marble from each bag is


There are 21 people on each team. First you can divide 252 and 12. You get 21. To check you can then multiply 12 and 21 and get 252