Find the mode from the given data.
1 ,2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2 ,3, 4, 1, 2, 3, 4, 1 ,2 ,3 ,4 ,5 ,5 ,1 ,5 ,5, 5, 3, 5, 1, 2, 4, 5, 6, 1, 2, 4, 2, 1
Question 68. Find the number of triangles in the given figure-