What is 5c2 it is in combinations for high school.

5C2 is asking how many combinations of 2 can be made out of 5 items.

The formula to solve this is:

C(n,r) = n! / (r!(n-r)!)

N is the number of items and r is the sample

Replace n and r and solve:

5! / (2!(5-2)!)

a number with an exclamation point, means to multiply that number by all the numbers below it.

5! = 5 *4 *3 *2 *1 = 120

2! = 2*1 =2

5-2 = 3

3! = 3*2*1 = 6

Now you have 120 / 2*6 = 120/12 = 10

The answer is 10.

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.

noncoplanar points are points that do not lie on the same line.