How many different four letter words can be made from the alphabet if the first two letters come from the first half of tha alphabet and the second two letters come from the second half of the alphabe?

Answer 1

The first half of the alphabet consists of 13 letters (A-M), and the second half consists of another 13 letters (N-Z). For the first two letters, you can choose any of the 13 letters for each position, giving (13 \times 13 = 169) combinations. For the last two letters, you also have 13 choices for each, resulting in another (13 \times 13 = 169) combinations. Therefore, the total number of different four-letter words is (169 \times 169 = 28,456).