Answer :
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
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation


RELATED QUESTIONS :
Four letters E, K
RD Sharma - Mathematics. There are 6 ite
RD Sharma - MathematicsHow many permutat
RD Sharma - MathematicsFind the total nu
RD Sharma - MathematicsIn how many ways
RD Sharma - MathematicsFrom among the 36
RD Sharma - MathematicsHow many differen
RD Sharma - MathematicsHow many three-di
RD Sharma - MathematicsIn how many ways
RD Sharma - MathematicsHow many three-di
RD Sharma - Mathematics