Consider the number 6789. If I switch the digits in the tens and thousands place, what would be the resulting number?

• A. 7896
• B. 8976
• C. 6789
• D. 7869

Answer: (A)

Think about place value and what it means to swap two positions. Swapping the thousands and tens digits means exchanging the leftmost digit with the third digit from the right, while the other digits stay in their places. In 6789, the thousands digit is 6 and the tens digit is 8. After swapping, the leftmost digit becomes 8 and the tens digit becomes 6, with 7 in the hundreds place and 9 in the ones place. Reading from left to right gives 8 7 6 9, which is 8769. The options shown don’t include this result, so there may be a mismatch in the choices.