To find the number of visible blocks from the top view of each rectangular solid, we calculate the area of their top faces. The top view of a 2x6x2 solid has an area of 2 x 6 = 12 blocks, while the top view of a 3x5x2 solid has an area of 3 x 5 = 15 blocks. Therefore, the 3x5x2 solid has 3 more visible blocks than the 2x6x2 solid when viewed from the top.