Question

If in each of the following numbers, the positions of the first and the fourth digits are interchanged and so also the second and the third digits, what will be the difference between the highest and the lowest numbers after rearrangement?

2945, 7321, 5789, 6562, 4953

1. 6398
2. 6848
3. 8645
4. 8638

Answer 1

Correct Answer - Option 4 : 8638

Given Numbers: 2945, 7321, 5789, 6562, 4953

When the positions of the first and the fourth digits are interchanged;

5942, 1327, 9785, 2566, 3954

When the second and the third digits are interchanged;

5492, 1237, 9875, 2656, 3594

Highest Number = 9875

Lowest Number = 1237

Difference = 9875 - 1237 = 8638

Hence, "8638" is the correct answer.