Answer:
15 possible combinations
Step-by-step explanation:
Given


Required
Determine the possible number of combinations
The question emphasizes on "selection" which means "combination".
So; To answer this question, we apply the following combination formula:

In this case:


The formula becomes:






<em>Hence, there are 15 possible combinations</em>
To find the number or rows, divide the total number of students by the number in each row.
63 / 7 = 9 rows.
Answer:
B. 4.05 liters
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given

Required
Factorize
To start with; we need to group the expression into two

Factorize each grouped expression, using their common factor

From the list of given options;
Option A is correct
Answer:
Bro if u don't know the ques then ask ur mom or dad kid