A store is getting ready for a back-to-school sale. They have 24 rows of 12 boxes of colored pencils. Each box has 64 colored pencils. How many colored pencils are in the display?

The store has 288 boxes of colored pencils because 24 x 12 = <<24*12=288>>288.

The store has 18,432 colored pencils because 288 x 64 = <<288*64=18432>>18,432. Answer: \boxed{18,432}.

To find out how many colored pencils are in the display, you need to multiply the number of rows, the number of boxes per row, and the number of colored pencils per box. Let's calculate it step by step:

1. Calculate the number of boxes in the display:
Number of boxes per row = 12
Number of rows = 24
Total number of boxes = Number of boxes per row × Number of rows
= 12 × 24
= 288

2. Calculate the number of colored pencils in the display:
Number of colored pencils per box = 64
Total number of colored pencils = Number of boxes × Number of colored pencils per box
= 288 × 64
= 18,432

Therefore, there are 18,432 colored pencils in the display.