Download the app

Permutations

Remember concepts with our Masterclasses.

80k Users
60 mins Expert Faculty Ask Questions
Question

If λ is the number of four digit numbers that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 such that the least digit used is 4,(Repetition of digits is allowed) then the value of  λ3is

Moderate
Solution

If repetion allowed

λ= Required number of numbers 

=6454 =671λ3=6713=223.66


Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?


ctaimg

Create Your Own Test
Your Topic, Your Difficulty, Your Pace


Similar Questions

The total number of 5-digit numbers of different digits in which the digit in the middle is the largest is


whats app icon
phone icon