Question

The number of $4$ digits even numbers that can be formed using $0,1,2,3,4,5,6$ without repetition is

• A. $120$
• B. $300$
• C. $420$
• D. $20$

Answer 1

The correct option is C $420$

For even no, last digit could

be 0,2,4,6

But first digit cannot be 0

So : $I:6\times 5\times 4=120$

$II:5\times 5\times 4=100$

$III:5\times 5\times 4=100$

$IV:5\times 5\times 4=100$

$\therefore$ Total no.of 4 digit even

no. $=120+100+100+100$

$=420$