Find all the numbers with prime factors 2, 3, and 7 that equal less than 200.
a possible number is
(2)(3)(7)=42 ------> is less than or equal to 200
(2^2)(3)(7)=84 ---> is less than or equal to 200
(2^3)(3)(7)=168 -> is less than or equal to 200
(2)(3^2)(7)=126 --> is less than or equal to 200
(2)(3^3)(7)=378 -----> is not less than 200
(2)(3)(7^2)=294 -----> is not less than 200
therefore
the numbers are 42,84,126 and 168