Tim writes four six-digit numbers using the digits 5, 6, 7, and 8. The numbers are: 667885, 676875, 685857, 686575 Find which of the numbers is the greatest.
Question 168
Find the sum of the greatest and the least six-digit numbers formed by the digits 2,0,4,7,6,5, using each digit only once.
Six-digit odd numbers, greater than 6,00,000 that can be formed using the digits 5,6,7,8,9 and 0 if repetition of digits is allowed is