Arrange the following numbers in ascending order:
847, 9754, 8320, 571

Step-1: Compare digits of the given numbers.

• Here, 847 and 571 are smaller than 9754 and 8320 since 847 and 571 are 3-digit numbers and 9754 and 8320 are 4-digit numbers.
• Among 847 and 571, 847 is greater than 571 as the first leftmost digit of 847 is greater than the first leftmost digit of 571.
• Similarly, among 9754 and 8320, 9754 > 8320 since the first left most digit of 9754 is greater than 8320.

Step- 2: Now arrange the numbers in ascending order.

Hence, the ascending order is as follows:
571 < 847 < 8320 < 9754