a gardener wants to plant trees in his garden in such a way that the number of trees in each row should be the same . if there are 2 rows or 7 rows or 9 rows , then no tree will be left . find the least number of trees required
"explanation : the least number of trees that are required = lcm ( 2 , 7 , 9 ) = 126 answer : c"
divide(multiply(multiply(9, 7), 2), const_2)