the ratio of 2 numbers is 3 : 7 and their h . c . f . is 10 . their l . c . m . is ?
"let the numbers be 3 x and 7 x their h . c . f . = 10 so the numbers are 3 * 10 , 7 * 10 = 30,70 l . c . m . = 210 answer is b"
sqrt(divide(10, add(power(7, 3), add(power(2, 3), power(3, 3)))))