This is the number of combinations of 4 from 12
12C4 = 12!
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4! 8!
= 12*11*10*9 11*5*9 = 495
-------------- =
4*3*2*1
It could be 20 times or 25 times
Answer:

Step-by-step explanation:
First of all we need to know the relation between 1 dollar and 1 cent in order to express everything in the units required in the question.
We know that
, so the amount paid for the item with single dollars has to be multiplied by 100 to express its value in cents.

Now that we have everything in cents, we can make the subtraction:

Replacing the value in cents we get:

The answer is c. forgive me if i am wrong
Answer:
they are all multiples of 5
Step-by-step explanation:
when you count by five you will meet each number =D