Question

In a certain language, if 4 and 6 are interchanged and 5 and 9 are interchanged, then which of the following numbers will be the highest?

Options

• 7458

• 4555

• 9383

• 7486

Answer 1

7458

Explanation -

In this case, 4 ↔ 6 and 5 ↔ 9

Next, using option 

1. 7458 → 7698
2. 4555 → 6999
3. 9383 → 5383
4. 7486 → 7686

The best choice is therefore (1).