Find the greatest number that will exactly divide 25, 35, 40 and 30.

Numbers: 25, 35, 40, and 30. 

Solution: 

To find the greatest number which divides 25, 35, 40, and 30.

HCF of 25, 35, 40, and 30 = 5 

Thus, 5 is the greatest number which will divide 25, 35, 40, and 30.