Q. 29

# Using the digits

We need to find 3 digits even number using 1,2,3,4,5,6,7

So, units place can have 2,4,6

Number of even numbers if 2 is at unit place

As 2 is fixed next two places can be filled in 5P2 ways

= 20

Similarly, if 4 will be at unit place, 3-digits number will be 20.

Also, if 6 will be at unit place, 3-digits number will be 20.

So, total 3-digits number will be 20+20+20 = 60

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses
RELATED QUESTIONS :

Four letters E, KRD Sharma - Mathematics

. There are 6 iteRD Sharma - Mathematics

How many permutatRD Sharma - Mathematics

Find the total nuRD Sharma - Mathematics

In how many ways RD Sharma - Mathematics

From among the 36RD Sharma - Mathematics

How many differenRD Sharma - Mathematics

How many three-diRD Sharma - Mathematics

In how many ways RD Sharma - Mathematics

How many three-diRD Sharma - Mathematics