Question

Oliver and Ava have $7$ number cards.


Ava wants to form the smallest $7$ digit number using all the cards only once. The number formed is .

• A. $3,467,890$
• B. $3,000,000$
• C. $9,876,430$
• D. $3,046,789$

Answer 1

The correct option is D $3,046,789$

All the digits in ascending order are : 0, 3,4,6,7,8,9.

Arranging them in this order, we get $0,346,789$ = $346,789$ which is a 6 digit number.

Thus , to obtain the smallest 7 digit number, we exchange the place of $0$ and $3$ .
Thus , the obtained number is $3,046,789$ .