Question

What will be the sum of the smallest number and the largest numbers that can be formed using the digits 7, 5, 2, 3 without repeating?

• A. 2537.
• B. 9889
• C. 9572.
• D. 7235.

Answer 1

The correct option is B 9889

2 is the smallest number among 7, 5, 2, 3
3 being the second smallest followed by 5 and 7 at last.

We should always start from the left hand side.

So, the smallest number using the combination of digits is 7, 5, 2, 3 is 2357.

Then reversing the number will give the largest number
= 7532

Sum = 2357 + 7532

= 9889