hi! i need help with question 5a and 5b

apologies for the bad photo taken

4. Two bags contain black and white counters as shown. A counter is to be picked at random from Bag A and placed into Bag B. A counter is then to be picked from Bag B. white. Work out the probability that the counter picked from Bag B will be Bag A Bag B 5. Two boxes contain black and white counters as shown. A counter will be picked from Box A and placed into Box B. A counter will then be picked from Box B and placed into Box A. (a) Work out the probability that Box A will Box A end up containing 3 white counters. (b) Work out the probability that Box A will Box B end up containing exactly 2 white counters. 6. A jar conta ins and six 7. Each day, there is a 40% chance that Li