If a=0, then the denominator is equal to 0. Since you cannot divide by zero, you are not allowed to do this.
Answer:
35 possible combinations would be there.
Step-by-step explanation:
We have total of seven students we have to choose three out of those seven

n is the total possibilities n =7 in the given case
And r is the chosen ones
Hence, r=3 in the given case.
Substituting the values of n and r in the formula we get



Using n!=n(n-1)----1

Cancel the common factor we get
possible combinations would be there.
Answer:
what are your options?
Step-by-step explanation:
B (1,0). -2 + 3 = 1. -2 + 2 = 0.