Question

The largest five digit number which can be formed using the digits 7, 8, 5, 4 and 9, if the repetition of digits is not allowed is

• A. 98754
• B. 89457
• C. 45789

Answer 1

The correct option is A 98754

Since we are required to form the largest 5 digit number, the leftmost digit at ten-thousand's place must be the largest out of the 5 given digits, that is, 9.

Similarly, we can say,
Digit at thousands' place = largest digit after 9 = 8
Digit at hundreds' place = largest digit after 9 and 8 = 7
Digit at tens' place = largest digit after 9, 8 and 7 = 5
Digit at ones' place = remaining digit = 4

Placing the digits at their respective places we get 98754