How many different 9 letter code words can be made using the symbols %%%% &&& ++
1260
To find the number of different 9-letter code words that can be made using the symbols %, &, and +, we need to consider each position in the code word separately.
Since there are three symbols (%,&, and +), and each position in the code word can be filled with any of these three symbols, we have three choices for the first position, three choices for the second position, three choices for the third position, and so on until the ninth position.
Therefore, the total number of different 9-letter code words can be calculated by multiplying the number of choices for each position together:
Total number of different code words = 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3 * 3
Computing this multiplication, we find that there are 19683 different 9-letter code words that can be made using the symbols %, &, and +.