Question

If the digits in the number 758462139 are arranged in ascending order, then how many digits remain in the same place?

• A. one
• B. two
• C. three
• D. four

Hint:

To solve problems involving arrangements, carefully compare the original and sorted numbers and count the digits that remain unchanged.

Answer 1

The Correct Option is B

Step 1: Arrange the digits in ascending order.
The given number is 758462139. When the digits are arranged in ascending order, we get: \[ 123456789 \]

Step 2: Compare the original and arranged numbers.
Compare the digits of the original number \( 758462139 \) with the new number \( 123456789 \). The digits that remain in the same position are: - The digit 1 is in the same place in both numbers. - The digit 3 is in the same place in both numbers. Thus, two digits remain in the same place.

Final Answer: \[ \boxed{\text{two}} \]