How many marbles are in a jar of marbles?

How many marbles are in a jar of marbles?

A jar of marbles has 125 marbles in it. 25 are blue marbles, 65 are red marble, 15 are green marbles and 20 are yellow marbles. What is the probability that the first three marbles picked are green or blue? Probability of each event = (# green marbles + # blue marbles)/ Total # of Marbles

How many green marbles do you need to get 9 blue marbles?

Therefore, we need to take at least 9 green marbles, which would mean 4 or less of the marbles would be blue (8 green and 5 blue would leave us with equal green and equal blue marbles, so it would have to be more than 8 green marbles, which gives us 9 green marbles). We can also solve this as an inequality.

What is the probability of not getting a purple marble?

A bag has 5 white marbles, 8 red marbles and 4 purple marbles. If we take a marble randomly, then what is the probability of not getting purple marble? Hence, the probability of not getting purple marbles = 1-4/17 = 0.77 6.

How do you solve for the difference in marbles?

We can also solve this as an inequality. You take the difference in marbles, which is 3, which means you need the difference in green and blue marbles to be greater than 3, or at least 4. You have b + g = 13 and g – b > 3, where b and g are positive integers.

How many more green marbles does John have to take?

If there are going to be more blue than green marbles after John’s 13 marbles, he has to take at least 4 more green marbles than blue marbles, because right now there are 3 less blue marbles.

What is the probability of picking two pink marbles that are both pink?

The probability of picking 2 marbles that are both pink would be the product of the probability of choosing the first pink marble multiplied by the probability of choosing a second pink marble from the remaining marbles in the mix. This would be 1/2 * 4/9 = 2/9. To obtain the probability that is asked, simply compute 1 – (2/9) = 7/9.