A box contains some coloured cards.
Each card is red or blue or yellow or green.
The table shows the probability of taking a red card or a blue card or a yellow card.
Card
|
Probability
|
Red
|
0.3
|
Blue
|
0.35
|
Yellow
|
0.15
|
Green
|
|
George takes at random a card from the box.
Work out the probability that George takes a green card.