Question

The smallest odd number formed by using the digits $1,0,3,4$ and $5$ is

• A. $10345$
• B. $10453$
• C. $10543$
• D. $10534$

Answer 1

The correct option is A $10345$

The smallest odd number using digits $1,0,3,4,5$

$\to$ We have five digits and we have to make smallest five digit odd numbers.

$\to$ So, the number cannot start with $0$

$\to$ For the smallest it should be start with $1$

$\to$ and second space should be $0$

$1\overline{1st}$ $0\overline{2nd}$ $\overline{3rd}$ $\overline{4rt}$ $\overline{5th}$

$\to$ Now two space are filled and $3$ are left.

$\to$ For smallest third place for should be $3$

$\underset{–}{1}\underset{–}{0}\underset{–}{3}\underset{–}{}\underset{–}{}$

$\to$ Now two places are left for and no. should be odd so, last digit should be $5$

So, the number $=10345.$