0

Guest

Courses New

Q from permutation and combination Kphfudtistzhlhlcjajfzhlxhldoystodhcyldtisyodyodupfupfksitstiddupdsuofpysti

Q from permutation and combination 
Kphfudtistzhlhlcjajfzhlxhldoystodhcyldtisyodyodupfupfksitstiddupdsuofpysti

Question Image
Grade:

1 Answers

Arun
25757 Points
5 years ago
Dear student
Let a number is such that
* . * . * .
Now even digits (0, 2, 4) occupy odd places
Hence 
3! 
Now odd digits at even places
3! 
Hence total numbers = 3! * 3! = 36 
But there are two casss in which 0 is at first place.
Hence 6 divit number = 36 - 2 *3! = 36 - 12 = 24

Think You Can Provide A Better Answer ?

Other Related Questions on Magical Mathematics[Interesting Approach]

View all Questions »

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More