0 votes 0 votes How many different three-letter initials are there that begin with an $A?$ Combinatory kenneth-rosen discrete-mathematics counting descriptive + – admin asked Apr 23, 2020 • recategorized Apr 28, 2020 by Lakshman Bhaiya admin 6.4k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 1 votes 1 votes 26 Alphabets 1 letter = 1 way ( since it must be 'A') 2 letter = 26 ways 3 letter = 26 ways Total ways = 1 x 26 x 26 = 676 ways 676 different three-letter initials are there that begin with an A. Saitheja Muthoju answered Apr 26, 2020 • selected Jun 4 by Shaik Masthan Saitheja Muthoju comment Share Follow See all 0 reply Please log in or register to add a comment.
1 votes 1 votes three letters will be different but first letter will be A. Hence the second letter can be choosen in 25 ways and similarly the third letter can be choosen in 24 ways. Hence the ways of choosing three different letters will be 1*25*24=600 ways. DIBAKAR MAJEE answered Apr 29, 2020 DIBAKAR MAJEE comment Share Follow See all 0 reply Please log in or register to add a comment.