Sage-Tips

What is the ratio of red counters to blue counters?

The ratio of red counters to blue counters is 1:3 – Gauthmath.

What is the probability of choosing red?

Explanation: In a standard deck of 52 cards, half of them are red (hearts and diamonds) and the other half are black (clubs and spades). Which makes the odds of picking a red card at random 50\%.

How do you work out ratios ks3?

1. To work this out, look for a number that will divide into 40 and 28 .
2. 2 divides into both numbers, so 40 : 28 can be written as 20 : 14 .
3. You can divide these by 2 , so the simplified ratio is 10 : 7 .
4. No number divides into 10 and 7 exactly, so 10 : 7 is the simplest form of the ratio.

What is the ratio of red colored circle to blue colored circle?

In this line of circles the ratio of red circies to blue circles is 1:3 How many more red circles would need to be added to make the ratio of red to blue 3:1 2.

What is the probability that the two counters will be the same Colour?

7/13
We multiply the 2 fractions together to get 6/13. We add the 2 fractions (1/13 and 6/13) to get 7/13. Therefore, the probability that both counters are the same colour is 7/13.

What is the probability it is a green marble?

60\%
The probability of drawing a green marble from a marble bag is 60\%.

What is the probability of choosing a green marble?

The probability of selecting a green marble at random from a jar that contains only green, white and yellow marbles is 0.

How do you find the probability of selecting two red counters?

There are four possible outcomes. To work out the probabilities of each total outcome, multiply the probabilities together. A bag contains 4 blue counters and 3 red counters. A box contains 5 blue counters and 2 red counters. Complete the tree diagram and work out the probability of selecting two red counters.

1 There are some red counters and some blue counters in a bag. The ratio of red counters to blue counters is 3:1. Two counters are removed at random. The probability that both the counters taken are blue is 20 Work how many counters were in the bag before any counters were removed.

How many red counters are in a bag of cards?

A bag contains 10 red counters and 6 blue counters. Two counters are taken out and they are both different colours. What is the probability that the next counter taken out is red?

How many blue counters are there in a bag?

15.There are only blue counters, green counters, red counters and yellow counters in a bag. George is going to take at random a counter from the bag. The table shows each of the probabilities that George will take a blue counter or a green counter or a yellow counter.