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 7 rows or 6 rows or 4 rows, then no tree will be left. Find the least number of trees required	Choose the correct option.
A) 22
B) 84
C) 28
D) 76
E) 21
Explanation:   The least number of trees that are required = LCM(7,6,4) = 84.   Answer: 84
<result>B</result>
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 7 rows or 6 rows or 4 rows, then no tree will be left. Find the least number of trees required