1.2.3 Quiz: Counting Principles Question 1 of 10
A keycode must contain 2 letters followed by 3 numbers. The letters may be
any letter of the alphabet. The numbers should be any number from 0 to 9.
How many different keycode combinations are there?

Three coins are flipped. what is the probability that there will be at least two tails?

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp