a*****g
发帖数: 1320 | 1 1.How many of the letters in MATHCOUNTS have a horizontal line of symmetry?
2.Billy takes two marbles, without replacement, from a bag that contains
only six yellow marbles and three blue marbles. What is the probability that
he gets one marble of each color? Express your answer as a common fraction. | B*Q
发帖数: 25729 | 2 1. HCO
2. 1/2 (6/9*3/8 + 3/9*6/8) | a*****g
发帖数: 1320 | 3 Thanks a lot! The answers are correct!
【在 B*Q 的大作中提到】
: 1. HCO
: 2. 1/2 (6/9*3/8 + 3/9*6/8)
|
|
