A DNA sequence consists of a string of elements called nucleotides, in a defined order. Suppose the DNA sequence of a virus is 12 nucleotides long. If each nucleotide can be either a G, T, C, or A, how many different sequences are possible? Answer:

For a Halloween party, each guest can choose from the 6 different kinds of candy to have in a prize bag. If any number of candy types can be chosen, how many candy type combinations are possible?

Given A = {1, 5, 6, 8} and B = {2, 5, 6, 8, 9}, find B – A. O {1, 2, 5, 6, 8} ○ {5,6,8} ○ {2, 9} {1}

.When purchasing a ticket for the PowerBall lottery game a player chooses 5 distinct numbers between 1 and 69 (inclusive). The order in which the numbers are chosen does not matter. In addition, the player chooses one number between 1 and 26 (inclusive) to match the "powerball." How many different powerball tickets are possible?

How many di erent arrangements are there of the letters A, B, C, D, E, and F for which E is not the last letter?

A dictionary contains a certain number of unique words. If the phrase purple pants has a 625 change of being randomly generated, how many words are in the dictionary? O 25 O 625 O 390 O 5

Find mAB in A ABC.

How many ways to arrange a 4-digit number, provided that the said number must be even and there are no repeated digits?