Question

Question 165
A mobile number consists of ten digits. The first four digits of the number are 9,9,8 and 7. The last three digits are 3,5 and 5. The remaining digits are distinct and make the mobile number which is the greatest possible number. What are these digits?

Answer 1

Given the total number of digits = 10
First four digits of the mobile number = 9,9,8,7
and last three digits of the mobile number = 3,5,5
Now to make the mobile number, the possible distinct digits are 6,4,2,1 and 0.
For making the greatest mobile, we can select the digits 6,4 and 2.
$\therefore$ Required mobile number = 9987642355
Hence, the required digits are 6,4 and 2.