Let's begin by listing out the information given to us:
There are four students: n = 4
Number of students to be selected: r = 2
To calculate the combination of 2 students to be chosen, we use:

Therefore, there 12 possible combinations from these
Hey there!
Ratio = division
now, division of boys over girls
= 6 / 15
= 2 / 5
Ratio = 2 : 5
Hope helps!
Answer:
Step-by-step explanation:

Answer:
<h2>C. 153</h2>
<em>Hope</em><em> this</em><em> helps</em>
<em>shshsgshsh</em>