In this sequence, it should be 27, not 28 (28 is not divisible by 3)
I would say 21, because it is not an even number like the rest are.
The median is 27.
22, 24, 25, 26, 28
Scandium 49 has 24 protons because it is scandium (which has an atomic number of 21) plus 28 neutrons.
27
27
, 21, 22, 24, 25, 26, 27, 28
No number has all of the same factors as another number. 21, 22, 23, 24, 25, 26, 27, 28 and 29 have 1 in common. 21 and 28 share 1 and 7. 22, 24, 26, and 28 share 1 and 2. 24 and 28 share 1, 2 and 4
21 and 28 are composite.
20 21 22 24 25 26 27 28 30
20, 21, 22, 23, 24, 25, 26, 27, 28, 29
13 18 16 21 19? After This It's 24 22 27 25 30 28 33 and 31. They First Added 5 To A Number And Subtracted It With 2 And did it again and again for answer!!!