Register

Kenneth Rosen Edition 7 Exercise 6.1 Question 8 (Page No. 396)

• recategorized by
8,403 views

2 Answers

2 votes
2 votes

we have 26 alphabets.

The first letter has 26 choices

The second letter has 25 choices ( we cannot choose same first letter again)

The third letter has 24 choices ( we cannot choose first or second letter again)

Total ways = 26 x 25 x 24

                  = 15600

 15600 different three-letter initials with none of the letters repeated can people have.

User Avatar
Voting & Accepting an answer helps improve the community
← PreviousNext →
← Previous in categoryNext in category →

Related questions

7.6k
views
2 answers
0 votes
admin asked Apr 23, 2020
7,608 views
Kenneth Rosen Edition 7 Exercise 6.1 Question 24 (Page No. 396)
How many positive integers between $1000$ and $9999$ inclusiveare divisible by $9?$are even?have distinct digits?are not divisible by $3?$are divisible by $5$ or $7?$fare ... divisible by $5$ but not by $7?$are divisible by $5$ and $7?$
User Avatar
12.5k
views
1 answers
0 votes
admin asked Apr 23, 2020
12,539 views
Kenneth Rosen Edition 7 Exercise 6.1 Question 23 (Page No. 396)
How many positive integers between $100$ and $999$ inclusiveare divisible by $7?$are odd?have the same three decimal digits?are not divisible by $4?$are divisible by $3$ or ... divisible by $3$ but not by $4?$are divisible by $3$ and $4?$
User Avatar
6.8k
views
4 answers
1 votes
admin asked Apr 23, 2020
6,752 views
Kenneth Rosen Edition 7 Exercise 6.1 Question 22 (Page No. 396)
How many positive integers less than $1000$are divisible by $7?$are divisible by $7$ but not by $11?$ are divisible by both $7$ and $11?$ are divisible ... by neither $7$ nor $11? $have distinct digits?have distinct digits and are even?
User Avatar
5.1k
views
2 answers
2 votes
admin asked Apr 23, 2020
5,101 views
Kenneth Rosen Edition 7 Exercise 6.1 Question 21 (Page No. 396)
How many positive integers between $50$ and $100$are divisible by $7?$ Which integers are these?are divisible by $11?$ Which integers are these?are divisible by both $7$ and $11?$ Which integers are these?
User Avatar
Link Copied!