The high school jazz band has 2 freshmen, 4 sophomores, 5 juniors, and 7 seniors. What is the probability that a randomly selected group of 6 students in the jazz band includes 1 sophomore, 2 juniors, and 3 seniors? A)3/70

B)25/143

C)50/663

D)60/1547

Equation for the calculation double 2 and then add 5

What is the radical expression that is equivalent to the expression 27 1 over 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.