Abox contains 15 cards. there are 5 red cards labeled 1, 2, 3, 4, and 5. there are 5 blue cards labeled 1, 2, 3, 4, and 5. there are 5 green cards labeled 1, 2, 3, 4, and 5. one card is drawn from the box.

what is the probability that it is a blue card with an even number or a red card with an odd number?

a.1/3

b.1

c.2/5

d.6/225

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.