Answer:

Step-by-step explanation:
GIVEN: two two-letter passwords can be formed from the letters A, B, C, D, E, F, G and H.
TO FIND: How many different two two-letter passwords can be formed if no repetition of letters is allowed.
SOLUTION:
Total number of different letters 
for two two-letter passwords
different are required.
Number of ways of selecting
different letters from
letters


Hence there are
different two-letter passwords can be formed using
letters.
Answer:
There is a decreasing pattern the farther they are the less likely hit the target.
Step-by-step explanation:
Answer:
Step-by-step explanation:
7/8 ÷ 3/4 is the same as saying 7/8 • 4/3
answer: 1.2 or 1 1/5 or 6/5