Question 373055
There are 6 + 5 + 4 = 15 apples, oranges, and pineapples all in all.  The number of ways of selecting three of these in order is 15*14*13 = 2730.  The total number of ways of selecting any three of 6 + 5 + 4  + 8 = 23 apples, oranges, pineapples, and grapes is 23 * 22*21 = 10,626.  The probability of selecting no grape is thus 2,730/10,626 = 65/253 = 0.2569, to 4 decimal places.