1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Mathematics
Combination of n Different Things Taken One or More at a Time
Find the numb...
Question
Find the number of
5
digits telephone having atleast one of their digits repeated .(Note . 0 can be accepted in first place )
Open in App
Solution
Number of numbers with repetition
=
10
×
10
×
10
×
10
×
10
=
100000
Number of numbers without repetition
=
10
×
9
×
8
×
7
×
6
=
302400
∴
Number of numbers with atleast one digit repeated
=
100000
−
302400
=
69760
Suggest Corrections
0
Similar questions
Q.
How many number of
5
−
digit telephone numbers be formed having atleast one of their digits repeated.
Q.
The number of four digit telephone numbers formed by the digits is ( Note : 0 can be accepted in the first place ):
Q.
The number of 5 digit telephone numbers having at least one of their digits repeated is? (0 can be the starting digit of the number)
Q.
The number of
5
digit telephone numbers having least one of their digits repeated is
Q.
The number of five-digit telephone numbers having at least one of their digits repeated is
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Nuclear Energy
MATHEMATICS
Watch in App
Explore more
Combination of n Different Things Taken One or More at a Time
Standard XII Mathematics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app