10, 15, 25 what is the range ?

15

jim is more than 20 yrs old but less than 60. you can count by 7s to reach his age. next yr you can count by 5s to reach his age how old is jim

To find the range of a set of numbers, you need to determine the difference between the largest and smallest values in the set.

In this case, the largest number is 25, and the smallest number is 10.

To find the range, subtract the smallest number from the largest number:

Range = 25 - 10 = 15

Therefore, the range of the set {10, 15, 25} is 15.