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:
24 mm
Step-by-step explanation:
25^2 - 7^2
625 - 49
= 576
missing side = √576 = 24
Answer:
B. 13 Booths
Step-by-step explanation:
Since there are 78 booths in total, and they are in 6 rows, this means we can divide both numbers to find the answer
78/6=13
So there are 13 booths in each row
Answer:
34
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hope this helps u !!