20 and 30 are rectangular numbers (4 * 5 and 5 * 6). There are none in between them.
The only square number between 20 and 30 is 25.
10, 20, 30, 40, 50...
It is: 20
20 5 30 6 42 7 Every other number is the product (multiplied) of the numbers it is between(5x6=30, 6x7=42), and the numbers between go in order (5, 6, 7) Therefor the next #s would be 56 8 72 9 90 10
30*20=600
5
20 and 30 are rectangular numbers (4 * 5 and 5 * 6). There are none in between them.
10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, +5 . . .
The only square number between 20 and 30 is 25.
30
30 is one such number .
60 ( 4 ) X 15 = 60 ( 3 ) X 20 = 60 ( 2 ) X 30 = 60 ( 5 ) X 12 = 60
10, 20, 30, 40, 50...
20
It is: 20
These will: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60.