Question

5. Which is the greatest 7-digit number formed by using three different digits and 5 in the hundreds place?​

Answer 1

Answer:

Since we have to write the greatest 7-digit number having 3 different digits, we will pick up the three greatest digits 7, 8, 9 out of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 ,9. Therefore, the greatest 7-digit number is 9999987.