Answer:
the third one is the correct answer
 
        
             
        
        
        
Product means to multiply.
Simply 
9*12= 108
:-)
        
                    
             
        
        
        
Answer:
I'm pretty sure A is the correct answer :)
(x-2)(x^4+3) is a polynomial
 
        
             
        
        
        
Answer:
Only vowels and odd numbers:
 
Spells math:
 
Step-by-step explanation:
We have four letters, so the probability that one letter is a vowel is 5/26 (we have 5 vowels in a total of 26 letters), then the second letter has a probability of 4/25 of being a vowel (1 vowel used), and so on (third letter being vowel = 3/24 and fourth letter being vowel = 2/23)
Then, for the digits, we do the same, one digits has 5/10 probability of being odd, then the second digit has 4/9, the third has 3/8 and the fourth has 2/7.
So the final probability would be:

To find the probability that the password spells the word “MATH", each letter has to be a specific letter, so the first letter has 1/26 probability, the second has 1/25, and so on:
