152, 153, 154
138, 140, 141, 142, 143, 144, 145, 146, 147, 148, 150 (including 138 and 150)
They are the numbers that have more than two factors in them.
150 and 169.
There are ten such numbers: 110, 120, 130, 140, 150, 160, 170, 180, 190 and 200.
152, 153, 154
138, 140, 141, 142, 143, 144, 145, 146, 147, 148, 150 (including 138 and 150)
102, 108, 114, 120, 126, 132, 138, 144, and 150
The GCF of 90 150 and 120 is 30. This leaves you with 3, 5 and 4. There are no further common factors between the 3 remaining numbers.
They are the numbers that have more than two factors in them.
120 and 144
150 and 169.
6, 10, 15, 25, 30, 50, 75, 150
Any number greater than 150.
For any integer greater than 5, where the units digit is 5 then that number can be expressed as the product of n and 5. As such, the number is composite. Therefore all numbers in the range 150 to 200 that have a units digit of 5 are composite,.
The GCF of 120, 150, and 180 is 30. The GCF of a set can't be larger than the smallest difference between numbers in the set, which, in this case, is 30. Since 30 is a factor of all of the numbers of the set, it is the GCF.
There are ten such numbers: 110, 120, 130, 140, 150, 160, 170, 180, 190 and 200.