Question

Find the difference between the greatest and smallest 7-digit numbers that can be formed by the digits 7, 1 ,4 and 3 if the repetition of digits is allowed

Answer 1

Answer:

The biggest 7-digit numberusing 1,7,4,2,6,8,0 is 7864210. The smallest 7-digit number will be 1024678. Thedifference will be (7864210–1024678) = 6839532. If you put 0 first for thesmallest number then it will become 6-digit number i.e. 0124678=124678 so it will be invalid in context of our question.

Explanation:

i think it's helpful

Answer 2

Answer:

The biggest 7-digit number using 1,7,4,2,6,8,0 is 7864210. The smallest 7-digit number will be 1024678. The difference will be (7864210–1024678) = 6839532. If you put 0 first for the smallest number then it will become 6-digit number i.e. 0124678=124678 so it will be invalid in context of our question.

Explanation:

The biggest 7-digit number using 1,7,4,2,6,8,0 is 7864210. The smallest 7-digit number will be 1024678. The difference will be (7864210–1024678) = 6839532. If you put 0 first for the smallest number then it will become 6-digit number i.e. 0124678=124678 so it will be invalid in context of our question.