Question

Form the greatest and the smallest 4-digit numbers using the given digits, without repetition:​ 9, 6, 0 and 7

Answer 1

Step1: Finding the smallest and largest 4- digit number using the given digits

Given digits = 9, 6, 0 and 7​
Since 9 > 7 > 6 > 0​​

Thus, the greatest 4-digit number = 9760​
And the smallest 4-digit number = 6079​

[we can't take 0 at the left most digit as zero before any number doesn't make sense]​

Hence, 9760 is the greatest 4-digit number & 6079 is the smallest 4-digit number.​