105
105, 111, 117, 123, 129, 135, 141, and 147
No.
125
100
125 is in the middle of 100 and 150.
105, 111, 117, 123, 129, 135, 141, and 147
(100 + 150) ÷ 2 = 125 is the number in between.
Multiples of 150
No.
It is: 150
125
100
120
150
120
125 is in the middle of 100 and 150.
No it is not, because it doesn't divide evenly into 150.