Sea el conjunto de números {3, 7, 1, 4, 6, 5, 2}, sus cuartiles corresponden a A) Q1= 2; Q2= 4; Q3= 6
B) Q1= 1,75; Q2= 3,5; Q3= 5,25
C)Q1= 2; Q2= 3,5; Q3= 6
D) Q1= 2; Q2= 3 Q3= 5

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.