Impossible, possible, or certain
Use the words impossible, possible, and certain to describe the chance of pulling a coloured marble from a bag. Unlimited questions, five difficulty levels, and a full worked solution every time, included free with weekly lessons.
Try one
A bag has 4 green marbles. If you pull one marble without looking, is picking a yellow marble impossible, possible, or certain?
Answer: impossible
See one solved, step by step
A bag has 2 red and 3 green marbles. If you pull one marble without looking, is picking a red marble impossible, possible, or certain?
📘 Worked solution
1The bag has 2 red and 3 green marbles.Count how many of each colour are in the bag.
2There are 2 red marble(s) out of 5 in the bag.Compare the count of red marbles to the total.
3Answer: possibleThere is at least one red marble and at least one other colour, so it might happen but isn't guaranteed.
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