Answer

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Updated On: 10-9-2020

Apne doubts clear karein ab Whatsapp par bhi. Try it now.

CLICK HERE

Loading DoubtNut Solution for you

Watch 1000+ concepts & tricky questions explained!

69.7 K+

3.5 K+

Text Solution

Solution :

(i) Number formed by taking 4 digits from the 5 digits. <br> `=.^(5)P_(4) = (5!)/(1!) = 5 xx 4 xx 3 xx 2 xx 1 = 120` <br> (ii) If numbers are even then 2 or 4 will be at unit place. So, number of ways to fill unit place = 2. <br> Number of ways to fill remaining 3 places from the remaining 4 digits `= .^(4)P_(3) = (4!)/(1!) = 24` <br> Therefore total even numbers `= 24 xx 2 = 48`