Question

4. In a certain African country, vehicle license plates consist of two letters of the alpha-

bet, followed by four digits from 0 to 9, 0 and 9 included.

(a). How many different license plates are there if the second letter on the plate is either

an ’O’ or a ’Q’ and the last digit is either a 3 or an 8?

(b). How many license plates are there if the first letter must be a ’K’ and the second

letter must be an ’A’ and the last digit must be 5?​

Answer 1

Answer:

The force, which opposes the relative motion between two surfaces in contact is known as friction.

Step-by-step explanation: